Improper input validation in weechat (Alpine package)

1) Improper input validation

EUVDB-ID: #VU8599

Risk: Low

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-14727

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to crash the affected messaging client.

The vulnerability exists due to an error when processing Date/time conversion specifiers in logger.c file (logger plugin) during log file creation. A remote attacker can send a specially crafted message and crash the affected client.

Mitigation

Install update from vendor's website.

Vulnerable software versions

weechat (Alpine package): 0.3.8-r0 - 1.6-r1

CPE2.3

• cpe:2.3:a:alpine:weechat_alpine_package:0.3.8-r0:*:*:*:*:alpine_linux:*:2.5
• cpe:2.3:a:alpine:weechat_alpine_package:0.4.0-r0:*:*:*:*:alpine_linux:*:2.6
• cpe:2.3:a:alpine:weechat_alpine_package:0.4.2-r0:*:*:*:*:alpine_linux:*:2.7

External links

https://git.alpinelinux.org/aports/commit/?id=3fb2fc4015bfd428e88e89710c3dd89db7d42b82
https://git.alpinelinux.org/aports/commit/?id=e0d9cb9d6eeb3d5b4e27c091209acedef80f1d9a
https://git.alpinelinux.org/aports/commit/?id=691f67170e02f0f5f18fb9ccc8ad18eb90708984
https://git.alpinelinux.org/aports/commit/?id=56fabe44397f08a0ad88d7e81749d8c91c89b4b2
https://git.alpinelinux.org/aports/commit/?id=c2dd3795830f7685e453b8cb1aa1c83a8cfa2068
https://git.alpinelinux.org/aports/commit/?id=60130a2d59c271a35c9fd39dc703cea09b674f35
https://git.alpinelinux.org/aports/commit/?id=b57c7764e5e29c3067e38b4b7effa1bd9568fbbb

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.