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CVE-2017-9048 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CNA: CISA-ADPCVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E	CVE
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E	CVE
https://security.gentoo.org/glsa/201711-01	CVE
http://www.debian.org/security/2017/dsa-3952	CVE
http://www.openwall.com/lists/oss-security/2017/05/15/1	CVE	ExploitMailing ListPatchThird Party Advisory
http://www.securityfocus.com/bid/98556	CVE	Third Party AdvisoryVDB Entry
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E	[email protected]
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E	[email protected]
https://security.gentoo.org/glsa/201711-01	[email protected]
http://www.debian.org/security/2017/dsa-3952	[email protected]
http://www.openwall.com/lists/oss-security/2017/05/15/1	[email protected]	ExploitMailing ListPatchThird Party Advisory
http://www.securityfocus.com/bid/98556	[email protected]	Third Party AdvisoryVDB Entry

see all 12 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-119	Improper Restriction of Operations within the Bounds of a Memory Buffer	[email protected]
CWE-119	Improper Restriction of Operations within the Bounds of a Memory Buffer	CISA-ADP

Affected Products

Product	Versions
xmlsoft libxml2	2.9.4
CPE cpe:2.3:a:xmlsoft:libxml2:2.9.4:::::::* Remediation No remediation found in references.

Change History

13 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
May 13, 2026	CVE Status Change	[email protected]
Dec 18, 2025	CVE Modified	CISA-ADP
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Nov 7, 2023	CVE Modified	[email protected]
Jun 29, 2021	CVE Modified	[email protected]
Jun 28, 2021	CVE Modified	[email protected]
Nov 11, 2017	CVE Modified	[email protected]
Nov 5, 2017	CVE Modified	[email protected]
May 26, 2017	Initial Analysis	[email protected]
May 25, 2017	CVE Modified	[email protected]