Description
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'. 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.
Published: 2017-05-18
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-1008-1 libxml2 security update
Debian DSA Debian DSA DSA-3952-1 libxml2 security update
EUVD EUVD EUVD-2017-17988 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'. 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.
Ubuntu USN Ubuntu USN USN-3424-1 libxml2 vulnerabilities
Ubuntu USN Ubuntu USN USN-3424-2 libxml2 vulnerabilities
History

Thu, 18 Dec 2025 12:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 11 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00627}

epss

{'score': 0.00575}


Subscriptions

Redhat Jboss Core Services
Xmlsoft Libxml2
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2025-12-18T11:40:50.027Z

Reserved: 2017-05-18T00:00:00.000Z

Link: CVE-2017-9048

cve-icon Vulnrichment

Updated: 2024-08-05T16:55:22.155Z

cve-icon NVD

Status : Modified

Published: 2017-05-18T06:29:00.433

Modified: 2026-05-13T00:24:29.033

Link: CVE-2017-9048

cve-icon Redhat

Severity : Low

Publid Date: 2017-05-15T00:00:00Z

Links: CVE-2017-9048 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses