Slackware Linux update for libyaml

1) Heap-based buffer overflow

EUVDB-ID: #VU33092

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2014-2525

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in Heap-based buffer overflow in the yaml_parser_scan_uri_escapes function in LibYAML before 0.1.6. A remote attacker can use a long sequence of percent-encoded characters in a URI in a YAML file. to trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update the affected package libyaml.

Vulnerable software versions

Slackware Linux: 13.1 - 14.1

CPE2.3

• cpe:2.3:o:slackware:slackware_linux:13.1:*:*:*:*:*:*:*
• cpe:2.3:o:slackware:slackware_linux:13.37:*:*:*:*:*:*:*
• cpe:2.3:o:slackware:slackware_linux:14.0:*:*:*:*:*:*:*

External links

https://www.slackware.com/security/viewer.php?l=slackware-security&y=2014&m=slackware-security.477410

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.