Out-of-bounds read in libxtst (Alpine package)

1) Out-of-bounds read

EUVDB-ID: #VU32235

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-2016-7951

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

Multiple integer overflows in X.org libXtst before 1.2.3 allow remote X servers to trigger out-of-bounds memory access operations by leveraging the lack of range checks.

Mitigation

Install update from vendor's website.

Vulnerable software versions

libxtst (Alpine package): 1.2.0-r0 - 1.2.2-r0

CPE2.3

• cpe:2.3:a:alpine:libxtst_alpine_package:1.2.0-r0:*:*:*:*:alpine_linux:*:2.1
• cpe:2.3:a:alpine:libxtst_alpine_package:1.2.1-r0:*:*:*:*:alpine_linux:*:2.3
• cpe:2.3:a:alpine:libxtst_alpine_package:1.2.1-r1:*:*:*:*:alpine_linux:*:2.3

External links

https://git.alpinelinux.org/aports/commit/?id=844d03dc7da8ceadec964dc59dc4ba8c7d691ff4
https://git.alpinelinux.org/aports/commit/?id=0f1c835810b5b0860e35c7bb2efb92fbfdfedb10
https://git.alpinelinux.org/aports/commit/?id=27d1714445344187452f08bceb087569e9f43c2b

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.