{ "document": { "aggregate_severity": { "text": "Important" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "TuxCare License Agreement", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.", "title": "Terms of Use" }, { "category": "details", "text": "* SECURITY UPDATE: Heap buffer overflow in remote filename charset\n conversion\n - debian/patches/CVE-2026-58471.patch: fix the E2BIG buffer-growth path of\n convert_fname() in src/url.c. On each iconv() overflow it recomputed the\n buffer size from the ORIGINAL length (done = len; len = done + inlen * 2)\n while resetting the write pointer to converted_fname + done, so outlen\n described a window that started before the bytes iconv() had already\n written; a multi-pass conversion therefore wrote past the allocation.\n The fix derives both the write offset and the remaining space from the\n actual bytes consumed (used = s - converted_fname) and guarantees the\n realloc grows the buffer\n - CVE-2026-58471\n * SECURITY UPDATE: Integer overflow leading to heap buffer overflow in HTML\n attribute entity encoding\n - debian/patches/CVE-2026-58472.patch: change the size accumulator of\n html_quote_string() in src/convert.c from int to size_t and guard every\n addition with INT_ADD_OK(). The per-character increments were correct,\n but a sufficiently long input overflowed the signed int counter, so\n xmalloc() received an undersized (or negative) size and the second loop\n wrote the escaped string past the end of it\n - CVE-2026-58472", "title": "Details" } ], "publisher": { "category": "vendor", "contact_details": "https://tuxcare.com/contact/", "name": "TuxCare", "namespace": "https://tuxcare.com/" }, "references": [ { "category": "self", "summary": "https://cve.tuxcare.com/els/releases/CLSA-2026:1789392206", "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1789392206" }, { "category": "self", "summary": "Canonical URL", "url": "https://security.tuxcare.com/csaf/v2/els_os/debian11els/advisories/2026/clsa-2026_1789392206.json" } ], "tracking": { "current_release_date": "2026-09-14T13:24:11Z", "generator": { "date": "2026-09-14T13:24:11Z", "engine": { "name": "pyCSAF" } }, "id": "CLSA-2026:1789392206", "initial_release_date": "2026-09-14T13:24:11Z", "revision_history": [ { "date": "2026-09-14T13:24:11Z", "number": "1", "summary": "Initial version" } ], "status": "final", "version": "1" }, "title": "Fix CVE(s): CVE-2026-58471, CVE-2026-58472" }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Debian 11", "product": { "name": "Debian 11", "product_id": "Debian-11", "product_identification_helper": { "cpe": "cpe:2.3:o:debian:debian_linux:11:*:*:*:*:*:*:*" } } } ], "category": "product_family", "name": "Debian" } ], "category": "vendor", "name": "Software in the Public Interest, Inc." }, { "branches": [ { "branches": [ { "category": "product_version", "name": "wget-0:1.21-1+deb11u2+tuxcare.els1.armel", "product": { "name": "wget-0:1.21-1+deb11u2+tuxcare.els1.armel", "product_id": "wget-0:1.21-1+deb11u2+tuxcare.els1.armel", "product_identification_helper": { "purl": "pkg:deb/tuxcare/wget@1.21-1%2Bdeb11u2%2Btuxcare.els1?arch=armel" } } } ], "category": "architecture", "name": "armel" }, { "branches": [ { "category": "product_version", "name": "wget-0:1.21-1+deb11u2+tuxcare.els1.arm64", "product": { "name": "wget-0:1.21-1+deb11u2+tuxcare.els1.arm64", "product_id": "wget-0:1.21-1+deb11u2+tuxcare.els1.arm64", "product_identification_helper": { "purl": "pkg:deb/tuxcare/wget@1.21-1%2Bdeb11u2%2Btuxcare.els1?arch=arm64" } } } ], "category": "architecture", "name": "arm64" }, { "branches": [ { "category": "product_version", "name": "wget-0:1.21-1+deb11u2+tuxcare.els1.amd64", "product": { "name": "wget-0:1.21-1+deb11u2+tuxcare.els1.amd64", "product_id": "wget-0:1.21-1+deb11u2+tuxcare.els1.amd64", "product_identification_helper": { "purl": "pkg:deb/tuxcare/wget@1.21-1%2Bdeb11u2%2Btuxcare.els1?arch=amd64" } } } ], "category": "architecture", "name": "amd64" } ], "category": "vendor", "name": "TuxCare" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "wget-0:1.21-1+deb11u2+tuxcare.els1.armel as a component of Debian 11", "product_id": "Debian-11:wget-0:1.21-1+deb11u2+tuxcare.els1.armel" }, "product_reference": "wget-0:1.21-1+deb11u2+tuxcare.els1.armel", "relates_to_product_reference": "Debian-11" }, { "category": "default_component_of", "full_product_name": { "name": "wget-0:1.21-1+deb11u2+tuxcare.els1.arm64 as a component of Debian 11", "product_id": "Debian-11:wget-0:1.21-1+deb11u2+tuxcare.els1.arm64" }, "product_reference": "wget-0:1.21-1+deb11u2+tuxcare.els1.arm64", "relates_to_product_reference": "Debian-11" }, { "category": "default_component_of", "full_product_name": { "name": "wget-0:1.21-1+deb11u2+tuxcare.els1.amd64 as a component of Debian 11", "product_id": "Debian-11:wget-0:1.21-1+deb11u2+tuxcare.els1.amd64" }, "product_reference": "wget-0:1.21-1+deb11u2+tuxcare.els1.amd64", "relates_to_product_reference": "Debian-11" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-58472", "cwe": { "id": "CWE-190", "name": "Integer Overflow or Wraparound" }, "notes": [ { "category": "description", "text": "GNU Wget through 1.25.0, fixed in commit dd692d9, contains a heap buffer overflow vulnerability in the html_quote_string() function in src/convert.c that allows a remote attacker to trigger memory corruption by supplying a crafted HTML attribute with a large number of characters requiring entity encoding. A server-supplied HTML attribute causes a signed integer counter to overflow during output size accumulation, resulting in an undersized heap allocation and subsequent heap buffer overflow during the copy phase.", "title": "Vulnerability description" } ], "product_status": { "fixed": [ "Debian-11:wget-0:1.21-1+deb11u2+tuxcare.els1.amd64", "Debian-11:wget-0:1.21-1+deb11u2+tuxcare.els1.arm64", "Debian-11:wget-0:1.21-1+deb11u2+tuxcare.els1.armel" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2026-58472" }, { "category": "external", "summary": "https://gitlab.com/gnuwget/wget/-/commit/dd692d9cea5335b181d877ae917fe6e75587a812", "url": "https://gitlab.com/gnuwget/wget/-/commit/dd692d9cea5335b181d877ae917fe6e75587a812" }, { "category": "external", "summary": "https://www.vulncheck.com/advisories/gnu-wget-heap-buffer-overflow-via-html-attribute-encoding", "url": "https://www.vulncheck.com/advisories/gnu-wget-heap-buffer-overflow-via-html-attribute-encoding" } ], "release_date": "2026-07-07T19:50:53Z", "remediations": [ { "category": "vendor_fix", "date": "2026-09-14T13:23:28.405745Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1789392206", "product_ids": [ "Debian-11:wget-0:1.21-1+deb11u2+tuxcare.els1.amd64", "Debian-11:wget-0:1.21-1+deb11u2+tuxcare.els1.arm64", "Debian-11:wget-0:1.21-1+deb11u2+tuxcare.els1.armel" ], "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1789392206" } ], "threats": [ { "category": "impact", "details": "Important" } ] }, { "cve": "CVE-2026-58471", "cwe": { "id": "CWE-122", "name": "Heap-based Buffer Overflow" }, "notes": [ { "category": "description", "text": "GNU Wget through 1.25.0, fixed in commit c2640fe, contains a heap buffer overflow vulnerability in the convert_fname() function within src/url.c that allows remote attackers to trigger memory corruption through a server-supplied filename requiring character set conversion. When the output buffer is too small during iconv E2BIG reallocation, the reallocation logic miscalculates the remaining space, leading to a heap buffer overflow that can be exploited via a maliciously crafted server response.", "title": "Vulnerability description" } ], "product_status": { "fixed": [ "Debian-11:wget-0:1.21-1+deb11u2+tuxcare.els1.amd64", "Debian-11:wget-0:1.21-1+deb11u2+tuxcare.els1.arm64", "Debian-11:wget-0:1.21-1+deb11u2+tuxcare.els1.armel" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2026-58471" }, { "category": "external", "summary": "https://gitlab.com/gnuwget/wget/-/commit/c2640fe5171c59f87c58dc9fcb195b2d18b010ee", "url": "https://gitlab.com/gnuwget/wget/-/commit/c2640fe5171c59f87c58dc9fcb195b2d18b010ee" }, { "category": "external", "summary": "https://www.vulncheck.com/advisories/gnu-wget-heap-buffer-overflow-via-convert-fname-in-url-c", "url": "https://www.vulncheck.com/advisories/gnu-wget-heap-buffer-overflow-via-convert-fname-in-url-c" } ], "release_date": "2026-07-07T19:47:47Z", "remediations": [ { "category": "vendor_fix", "date": "2026-09-14T13:23:28.405745Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1789392206", "product_ids": [ "Debian-11:wget-0:1.21-1+deb11u2+tuxcare.els1.amd64", "Debian-11:wget-0:1.21-1+deb11u2+tuxcare.els1.arm64", "Debian-11:wget-0:1.21-1+deb11u2+tuxcare.els1.armel" ], "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1789392206" } ], "threats": [ { "category": "impact", "details": "Important" } ] } ] }