{"id":"CVE-2017-9048","title":"libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a stack-based buffer overflow","summary":"libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a stack-based buffer overflow. The function xmlSnprintfElementContent in valid.c is supposed to recursively dump the element content definition into a char buffer 'buf' of size 'size'.…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-119","CWE-119"],"vendor":"xmlsoft","product":"libxml2","affected":["libxml2 = 2.9.4"],"published":"2017-05-18","updated":"2026-10-14","sourceUpdated":"2026-10-14T07:16:40.950","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2017-9048","references":[{"url":"http://www.debian.org/security/2017/dsa-3952","label":"cve@mitre.org"},{"url":"http://www.openwall.com/lists/oss-security/2017/05/15/1","label":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/98556","label":"cve@mitre.org"},{"url":"https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E","label":"cve@mitre.org"},{"url":"https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E","label":"cve@mitre.org"},{"url":"https://security.gentoo.org/glsa/201711-01","label":"cve@mitre.org"},{"url":"http://www.debian.org/security/2017/dsa-3952","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2017/05/15/1","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/98556","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/201711-01","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-398330.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd"],"epss":0.04848,"epssPercentile":0.91837,"ingestedAt":"2026-10-14T07:21:04.796Z","slug":"CVE-2017-9048","body":"## Overview\n\nlibxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a stack-based buffer overflow. The function xmlSnprintfElementContent in valid.c is supposed to recursively dump the element content definition into a char buffer 'buf' of size 'size'. At the end of the routine, the function may strcat two more characters without checking whether the current strlen(buf) + 2 < size. This vulnerability causes programs that use libxml2, such as PHP, to crash.\n\n## Affected\n\n- `libxml2 = 2.9.4`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":41.3,"likelihood":1,"exploitation":0,"ransomware":0},"changes":[]}