Latest security news
Page 3
Fri, October 23Yesterday
Pillow: TarIO negative size field causes infinite CPU-spin loop
影響: pip:Pillow < 13.0.0 → 13.0.0 TarIO.__init__ does not check that a tar header's size field is positive. A crafted header with a negative size makes it seek backward onto itself. This causes an infinite loop that uses 100% CPU and never returns. Details TarIO.__init__ reads 512-byte tar headers one at a time, looking for a member with a given name. For each header it reads the size field and skips ahead to the next header: python size = int(s[124:135], 8) ... self.fh.seek((size + 511) & (~511), io.SEEK_CUR) There is no check…
Pillow: Reachable undefined behavior in native integer operations, potentially leading to denial of service or logic integrity compromise
影響: pip:pillow < 13.0.0 → 13.0.0 Affected Object and Source Package: Pillow 12.3.0 Source: PyPI sdist pillow-12.3.0.tar.gz SHA-256: 3b8182a766685eaa002637e28b4ec8d6b18819a0c71f579bf0dbaa5830297cce Sink: src/_imaging.c:2809:15, xsize += dx Details The code in Pillow 12.3.0 is: c for (xsize = 0; text; text++) { int dx = self->glyphs[text].dx; if (dx > 0 && xsize > INT_MAX - dx) { PyErr_SetString(PyExc_OverflowError, "Width too large"); return -1; } xsize += dx; } The PILfont glyph advance is parsed from a signed 16-bit field, so…
Pillow PDF append accepts malformed shared page-tree DAG causing resource exhaustion
影響: pip:Pillow >= 5.1.0, < 13.0.0 → 13.0.0 Pillow's documented PDF append path can spend disproportionate CPU time on a compact malformed PDF page tree. An attacker who can supply an existing PDF to an application that appends an image with Image.save(..., format="PDF", append=True) can provide a malformed /Pages tree where each level repeats the same child /Pages reference in /Kids. Pillow treats the graph as a tree and expands each repeated reference in PdfParser.linearize_page_tree() without tracking visited or duplicate indirect ref…
Pillow multi-frame loaders can reuse stale native image storage after mode transitions
影響: pip:Pillow >= 11.0.0, < 13.0.0 → 13.0.0 Pillow multi-frame image loaders can retain native ImagingCore storage allocated for one frame while changing the Python-side image mode and decoder tiles for a later frame. If frame 0 allocates storage for a narrow mode such as L, and a later frame of the same dimensions switches to a wider mode such as RGB or CMYK, Pillow may decode wider pixels into the stale narrow native buffer. This causes native out-of-bounds writes and process crashes. In the MPO/JPEG path, I also demonstrated command e…
Pillow: BMP RLE decoder memory-amplification DoS via unbounded delta escape / absolute mode
影響: pip:pillow >= 9.1.0, < 13.0.0 → 13.0.0 BmpRleDecoder can be forced to allocate gigabytes of memory from a kilobyte-sized crafted BMP file via unbounded growth in the delta escape and absolute mode branches. Affected versions All versions up to and including current HEAD (v13.0.0.dev0, commit e7a7ea84) Root cause BmpRleDecoder.decode() (BmpImagePlugin.py:327-395) builds a Python bytearray data with dest_length = xsizeysize, looping while len(data) up to ~255xsize bytes in ONE iteration. - absolute mode (line 385): data += bytes_read…
Pillow: Decompression bomb check bypass in SpiderImagePlugin.seek() leads to unbounded allocation DoS
影響: pip:pillow < 13.0.0 → 13.0.0 SpiderImagePlugin's seek() bypasses the decompression bomb check, allowing a tiny ( DecompressionBombWarning fires correctly. - BYPASS: Image.open(stack, frame0=1x1) passes; im.seek(1) sets size (100,100) with NO DecompressionBombWarning/Error -> the check is bypassed. Real-world impact: a large frame-1 nsam/nrow (e.g. 40000x40000) causes im.load() to allocate ~6.4 GB (mode F) with the bomb check fully bypassed, from a file under 1 KB. Suggested fix Call Image._decompression_bomb_check(self.siz…
Pillow: Decompression-bomb protection bypass via multi-frame seek() in MPO and DCX (MpoImageFile.seek / DcxImageFile.seek)
影響: pip:Pillow < 13.0.0 → 13.0.0 Pillow's decompression-bomb protection (Image._decompression_bomb_check, gated by Image.MAX_IMAGE_PIXELS) is enforced only on the first frame, inside Image.open(). For multi-frame formats, seek() re-parses the target frame's header and resets self._size. GifImagePlugin and TiffImagePlugin re-run the bomb check on seek(), but MpoImageFile.seek() and DcxImageFile.seek() do not. A crafted MPO or DCX whose first frame is tiny (passing the check) but whose later frame declares enormous dimensions th…
Sentry-Javascript: Middleware Bypass when using Tunnel route
影響: npm:@sentry/nextjs >= 9.36.0, < 9.47.2 → 9.47.2, npm:@sentry/nextjs >= 10.0.0-alpha.0, < 10.75.2 → 10.75.2, npm:@sentry/nextjs >= 11.0.0-alpha.0, < 11.0.0-rc.1 → 11.0.0-rc.1 The tunnelRoute option makes the SDK send browser events to a path on your own Next.js server (for example /monitoring), where a rewrite forwards them to Sentry to prevent ad blockers from blocking them. To keep those envelope requests from being rejected by your middleware, the SDK skips middleware for them. The middleware skip was wider than the rewrite. The rewrite only serves requests to the tunnel path itself with the o and p parameters set. The skip applied to anything under the tunnel pa…
Next.js: Unauthenticated Remote Code Execution in Image Optimization API when SVG files are used
影響: npm:next >= 10.0.0, <= 15.5.27 → 15.5.28, npm:next >= 16.0.0, <= 16.4.0 → 16.4.1 A memory-related vulnerability has been discovered in an upstream library used for Image Optimization can lead to possible remote code execution (RCE) when Next.js runs on glibc-based Linux. Workaround Ensure the version of sharp used by Next.js is greater than or equal to 0.35.5. Fresh installs automatically get a fixed version of sharp. Upgrading Next.js to the patched versions will ensure package managers automatically provide a fixed version of sharp to Next.js.
Librsvg: Use-after-free when XML includes have duplicated entities
影響: rust:librsvg < 2.57.5 → 2.57.5, rust:librsvg >= 2.60.0-beta.0, < 2.60.3 → 2.60.3, rust:librsvg >= 2.61.0, < 2.61.5 → 2.61.5, rust:librsvg >= 2.62.0-beta.0, < 2.62.4 → 2.62.4, rust:librsvg >= 2.63.0-beta.0, < 2.63.2 → 2.63.2 Librsvg uses libxml2, a C library, to parse XML. When librsvg parses an SVG document which has a nested Xinclude, an XML entity declaration with a duplicate name as an existing one can cause a use-after-free error. While libxml2 is expanding an internal entity, a recursive XInclude can parse another document that declares an entity with the same name. Both parses use the same XmlState entity map on the librsvg side. entity_insert() replaces the first entry, whose Drop implementation calls xmlFr…
Next.js: Denial of Service in App Router using Server Actions
影響: npm:next >= 13.0.0, <= 15.5.27 → 15.5.28, npm:next >= 16.0.0, <= 16.4.0 → 16.4.1 Crafted requests targeting Next.js applications using App Router with at least one Server Action can lead to excessive CPU usage blocking processing of further requests in the same process. Workarounds No workaround exists besides upgrading. Applications using Pages Router or not using Server Actions are not vulnerable.
stream-json: FlexAssembler string/RegExp path filters join the full key stack per container start, giving O(depth^2) CPU denial of service
影響: npm:stream-json >= 2.0.0, <= 3.6.0 → 3.7.0 FlexAssembler, the custom-container assembler shipped in the stream-json package (src/core/utils/flex-assembler.js, re-exported at stream-json/utils/flex-assembler.js and stream-json/web/utils/flex-assembler.js), compiles a string or RegExp path filter into a matcher that runs keyStack.join(separator) on every container start. Because the key stack grows one entry per open object or array with no depth bound, a JSON document nested to depth D drives D container-start tokens that each perform an…
PyJWT: HS256/384/512 verify accepts empty HMAC key via oct JWK (PyJWK/PyJWKClient) enabling token forgery
影響: pip:pyjwt <= 2.13.0 → 2.14.0 HMACAlgorithm.from_jwk accepts a symmetric (kty=oct) JWK whose k value is the empty string and returns a zero-length key without raising. When a token is then verified with that key object (a PyJWK, or a PyJWK resolved by PyJWKSet / PyJWKClient), the HMAC verifier computes HMAC(key=b"", signing_input) and accepts any token an attacker forged with the same empty key. The attacker needs no secret knowledge: they reproduce the digest locally with an empty key and set the token's kid to the empty-k…
Jupyter Server: Gateway WebSocket handler bypasses kernel execute authorization
影響: pip:jupyter-server >= 2.0.0, < 2.6.0 → 2.6.0 Jupyter Server's gateway WebSocket handler checks that a user is authenticated, but it does not ask the configured Authorizer whether that user may execute kernels. In Jupyter Server 2.0.0 through 2.5.0, enabling GatewayClient.url automatically replaced the normal kernel channel handler with this gateway-specific handler. An authenticated user who is denied the execute action on the kernels resource can therefore still open a kernel channel and send messages to the upstream kernel. Details The…
Brotli: Out-of-bounds write in the Brotli decoder ("Node2Shell") also affects the PyPI Brotli package
影響: pip:brotli >= 1.0.3, < 1.2.1 → 1.2.1, pip:brotlicffi >= 1.0.3, < 1.2.1.0 → 1.2.1.0 A buffer overflow vulnerability in the Brotli decoder (c/dec/decode.c) in Google Brotli versions 1.0.3 through 1.2.0 on all platforms allows a remote unauthenticated attacker to corrupt adjacent decoder state memory, disclose sensitive memory contents, cause a denial of service, or potentially execute arbitrary code using a crafted Brotli-compressed stream. Users need to update any Brotli libraries or binaries between 1.0.3 through 1.2.0 to the latest available version: 1.0.10 or 1.1.1 or 1.2.1.
Thu, October 22
Hacker Conversations: Corey Thuen and the Evil Bit
Corey Thuen hires hackers for what he calls ‘the evil bit’ — an adversarial streak he believes is either there or it isn’t. The post Hacker Conversations: Corey Thuen and the Evil Bit appeared first on SecurityWeek .
ammonia: mXSS via MathML `annotation-xml` encoding strip
影響: rust:ammonia < 3.3.2 → 3.3.2, rust:ammonia >= 4.0.0, < 4.0.2 → 4.0.2, rust:ammonia >= 4.1.0, < 4.1.3 → 4.1.3 If a certain set of MathML tags are enabled, an attacker can inject arbitrary JavaScript code into the user's browser. The annotation-xml tag has slightly different behavior than the other "integration point" tags in MathML and SVG, but ammonia didn't handle it, so it didn't correctly strip the namespace-incompatible tags. This vulnerability only has an effect when the math and annotation-xml tags are both enabled, but the encoding attribute is disabled, because it relies on the following seque…
リクルートの中古車情報サービスで個人情報など流出か
リクルートが運営する中古車情報サイト「カーセンサーnet」や、中古車販売店向け業務支援サービス「C-MATCH」がサイバー攻撃を受けたことがわかった。
Cybercrime crackdown across Africa leads to 1,462 arrests, $105 million seized
More than 1,400 suspected cybercriminals were arrested across Africa this summer as part of a crackdown on the gangs perpetrating online fraud, ransomware and business email compromise attacks, Interpol said.
Indurex Raises $8 Million to Expand Industrial Cybersecurity Platform
The Amsterdam-based company plans to use the funding for research and development and commercial expansion in Europe and the Middle East. The post Indurex Raises $8 Million to Expand Industrial Cybersecurity Platform appeared first on SecurityWeek .
Signal Vulnerability Lets Malicious Callers Block Hang-Ups
Affecting the open source calling library RingRTC, the bug prevented calls from ending properly. The post Signal Vulnerability Lets Malicious Callers Block Hang-Ups appeared first on SecurityWeek .
Tech and Security Companies Respond to PHP2Shell Vulnerabilities
Vendors are checking their products for PHP2Shell, security firms are shipping detections, and governments are urging immediate patching. The post Tech and Security Companies Respond to PHP2Shell Vulnerabilities appeared first on SecurityWeek .
PHP脆弱性でいち早くサービス停止したコドモン 背景に「被害が出てからでは取り消せない」
保育・教育施設向けITサービス「コドモン」を運営するコドモンは10月22日、ITmedia NEWSの取材に対し、21日からの全サービス停止はPHPの「緊急」レベルの脆弱性2件への予防措置だったと明らかにした。不正アクセスや情報漏えいは確認されていないという。
番組宣伝システムでメディア関係者情報が流出か - フジテレビ
フジテレビジョンは、番組宣伝システムが侵害され、個人情報が流出した可能性があることを明らかにした。
Splunk, SolarWinds Release Fresh Security Updates
Patched vulnerabilities could allow attackers to execute code, elevate privileges, and leak sensitive information. The post Splunk, SolarWinds Release Fresh Security Updates appeared first on SecurityWeek .
Cisco Patches 34 Vulnerabilities Across Multiple Products
Critical-severity security defects could lead to command execution, authentication bypass, and XSS attacks. The post Cisco Patches 34 Vulnerabilities Across Multiple Products appeared first on SecurityWeek .
PHP2Shell Exploitation Started Days Before Patches
Initial attempts were observed on October 17, and mass activity began shortly after patches were released. The post PHP2Shell Exploitation Started Days Before Patches appeared first on SecurityWeek .
PHP脆弱性“PoCフライング公開”の経緯、支援財団が公表 混乱広げた企業を名指しで批判
PHP脆弱性がこれほどまでに世間を騒がせたのは、その緊急性はもちろん、本来伏せておくべきだった情報の先出しが影響している。開発プロジェクトを支援するThe PHP Foundation（PHP財団）が経緯を公開した。
LiteLLM Suspects GitHub Token Leak in AI Gateway Logs Behind Malicious Package Release
LiteLLM on Wednesday disclosed that threat actors compromised "multiple independent security controls" to push a malicious version of the Python package containing a credential stealer and a backdoor. On October 21, 2026, LiteLLM's release pipeline was compromised to push 1.107.0 to the Docker Hub registry and the Python Package Index (PyPI) repository. The incident took place around 4:00 a.m.
カプコン、1177万件漏えい 不正アクセスで
カプコンは10月22日、不正アクセスにより会員サービス「CAPCOM ID」の情報が1177万4247件漏えいしたと発表した。
Node.js Brotli Decoder Bug Could Allow Remote Code Execution in All Supported Versions
Node.js released security updates on October 21 for its three supported release lines, 22.x, 24.x and 26.x, fixing 10 flaws. The most serious is a bug in the Brotli decompression code that Node.js bundles, which the project says can allow remote code execution, meaning an attacker could run code of their choosing on the affected system. Each supported line has one fixed version:
Oracle Patches Over 1,200 Vulnerabilities With October 2026 CPU
Nearly 100 vulnerabilities have been assigned a critical severity rating and Fusion Middleware received the most patches. The post Oracle Patches Over 1,200 Vulnerabilities With October 2026 CPU appeared first on SecurityWeek .
侵入検知エンジン「Snort 3」に複数の脆弱性 - Cisco製品にも影響
Cisco Systemsは、オープンソースの侵入検知エンジン「Snort 3」に複数の脆弱性が判明したことを明らかにした。同社の複数製品にも影響があり、修正版を提供している。
Meta Ordered to Pay New Mexico $25 Billion for Deceiving Users About Privacy on Facebook
The $25 billion award far exceeds a $5 billion fine the Federal Trade Commission levied against Facebook in 2019. The post Meta Ordered to Pay New Mexico $25 Billion for Deceiving Users About Privacy on Facebook appeared first on SecurityWeek .
Ciscoのビデオ会議製品に深刻な脆弱性 - 修正版が公開
Cisco Systemsのビデオ会議関連製品「Cisco Expresswayシリーズ」に複数の脆弱性が判明した。リモートから認証なしに任意のコマンドを実行できる脆弱性も含まれる。
New QPACK Flaws Can Crash HTTP/3 Servers, Trigger Up to 4,000-Fold Memory Amplification
A remote attacker who has not logged in can crash many HTTP/3 web servers with a single connection, security firm FoxIO disclosed, releasing working proof-of-concept code. By sending a small batch of compressed HTTP headers that expands in memory to a much larger set, the attacker can force the server to use thousands of times more memory than it received, enough to run a default server
Someone Tried to Exploit PHP2Shell 4 Days Before the Vulnerabilities Were Publicly Disclosed
Amazon's Threat Intelligence team on Wednesday said it detected an attempt to exploit the newly disclosed PHP2Shell vulnerabilities on October 17, 2026, against its MadPot honeypot service, as the flaws come under broad exploitation in the wild following the release of the patches. "The exploit attempt originated from an IP address associated with a commercial anonymization network," CJ Moses,
PHP脆弱性、海外では“政府サイトごと停止”も オランダの電子認証やWikipedia関連サービスなどにも影響
プログラミング言語「PHP」の「緊急」レベルの脆弱性2件を巡り、海外では政府サイトを予防的に停止する動きが相次いだ。オランダは行政ポータルや認証基盤「DigiD」まで止め、フィンランドは政府の公開向けネットサービスを全て停止した。
「PHP」の深刻なRCE脆弱性「PHP2Shell」 - 悪用試行を観測
ウェブサイトをはじめ、広く活用されているプログラミング言語の「PHP」に、認証を必要とすることなくリモートからコードを実行できる深刻な脆弱性が見つかった問題で、すでに悪用を試みる攻撃も観測されている。実証コードも公開されており注意が必要だ。
コミックシーモア、流出は最大約420万件に メールアドレスや生年月日など 不正アクセスの経路特定・遮断は完了
電子書籍ストア「コミックシーモア」を運営するNTTソルマーレは10月21日、不正アクセスによる情報流出の影響範囲について発表した。最大約420万件の会員情報の流出を確認したとしている。
Anthropic、Claudeでソフトウェアのアタックサーフェスを洗い出し・縮小する研究を公開 OpenSSHの修正にも貢献
Anthropicは、AIモデル「Claude」でソフトウェアの攻撃対象領域を分析・縮小する研究結果を公開した。オープンソース25件を分析し、設定矛盾など493件の問題を特定。「OpenSSH」では、認証前に到達可能なコードを約5分の1削減し、最新版に対策が反映された。手法は脆弱性検出サービス「OSS Scanner」に組み込まれる。
NEC委託先への不正アクセスについてまとめてみた
2026年10月20日、NECは委託先がサイバー攻撃を受け、顧客のシステム障害と個人情報を含む情報の漏えいが生じたと公表しました。ここでは関連する情報をまとめます。 委託先の正規アカウント悪用 NECは10月20日、システム開発と保守業務を委託している企業(委託先)が9月下旬にサイバー攻撃を受け、窃取された正規アカウントの認証情報が悪用されたと公表した。これにより顧客において、不正アクセスによる被害と個人情報を含む情報の漏えいを確認したとしている(出典: 1)。NECが挙げた主な被害は2つ。1つは顧客のシステム環境への不正アクセスで、委託先の端末から正規アカウントを用いて行われ、サーバー内のフ…
不正取引も行われた岩井コスモ証券への不正アクセスについてまとめてみた
2026年10月16日、岩井コスモ証券は、インターネット取引のシステムの運用と保守を委託しているトレードワークスのシステムへの不正アクセスにより、顧客情報が漏えいを、また10月20日には売買管理システムへ攻撃により不正取引が行われたことも公表しました。ここでは関連する情報をまとめます。 委託先システムから顧客情報が漏えい 岩井コスモ証券株式会社は10月16日、委託先の株式会社トレードワークスのシステムが第三者による不正アクセスを受け、一部のインターネット取引の顧客情報が外部へ漏えいしたと公表した。対象は4,611名で、情報は氏名、メールアドレスなど。対象者には個別に報告したほか、二次被害は確認…