Memory corruption in libxslt (Alpine package)

Published: 2017-03-27

Risk	High
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2017-5029
CWE-ID	CWE-119
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	libxslt (Alpine package) Operating systems & Components / Operating system package or component
Vendor	Alpine Linux Development Team

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Memory corruption

EUVDB-ID: #VU11531

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2017-5029

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to write arbitrary files, cause DoS condition or execute arbitrary files on the target system.

The weakness exists in the xsltAddTextString function in transform.c due to lack of a check for integer overflow during a size calculation. A remote attacker can submit a specially crafted HTML page, trigger out-of-bounds write, write arbitrary files, cause the service to crash or execute arbitrary code.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Install update from vendor's website.

Vulnerable software versions

libxslt (Alpine package): 1.1.29-r0

CPE2.3

cpe:2.3:o:alpine:libxslt_alpine_package:1.1.29-r0:*:*:*:*:alpine_linux:*:3.1

External links

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.