Buffer overflow in less (Alpine package)

1) Buffer overflow

EUVDB-ID: #VU33081

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2014-9488

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The is_utf8_well_formed function in GNU less before 475 allows remote attackers to have unspecified impact via malformed UTF-8 characters, which triggers an out-of-bounds read.

Mitigation

Install update from vendor's website.

Vulnerable software versions

cabextract (Alpine package): 1.2-r0 - 1.4-r1

CPE2.3

• cpe:2.3:o:alpine:cabextract_alpine_package:1.4-r1:*:*:*:*:alpine_linux:*:
• cpe:2.3:o:alpine:cabextract_alpine_package:1.4-r0:*:*:*:*:alpine_linux:*:
• cpe:2.3:o:alpine:cabextract_alpine_package:1.3-r0:*:*:*:*:alpine_linux:*:

External links

http://git.alpinelinux.org/aports/commit/?id=1e95b722c563cb0d9e7bfeacee787d0f2f9fd861
http://git.alpinelinux.org/aports/commit/?id=447aaed49cd682bda892846139a0ee04a25cb41e
http://git.alpinelinux.org/aports/commit/?id=092770194c8e16e42adfb28eb07f5e8a789eb9aa
http://git.alpinelinux.org/aports/commit/?id=5463c1a8b4a387e1c9db804d851e17988ed107ed

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.