Input validation error in perl (Alpine package)

1) Input validation error

EUVDB-ID: #VU33957

Risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2011-2939

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

Off-by-one error in the decode_xs function in Unicode/Unicode.xs in the Encode module before 2.44, as used in Perl before 5.15.6, might allow context-dependent attackers to cause a denial of service (memory corruption) via a crafted Unicode string, which triggers a heap-based buffer overflow.

Mitigation

Install update from vendor's website.

Vulnerable software versions

perl (Alpine package): 5.12.2-r0 - 5.12.3-r0

CPE2.3

• cpe:2.3:o:alpine:perl_alpine_package:5.12.2-r0:*:*:*:*:alpine_linux:*:2.1
• cpe:2.3:o:alpine:perl_alpine_package:5.12.3-r0:*:*:*:*:alpine_linux:*:2.1

External links

https://git.alpinelinux.org/aports/commit/?id=9220c558cc69fe451cc562f97d0ec6abcc711121
https://git.alpinelinux.org/aports/commit/?id=0b434eb040355be01914d86b8f17181272b34c64

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.