Remote DoS in WeeChat



Published: 2017-09-26
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2017-14727
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		WeeChat
Client/Desktop applications / Messaging software

Vendor WeeChat.org

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Improper input validation

EUVDB-ID: #VU8599

Risk: Low

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

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

Update to version 1.9.1.

Vulnerable software versions

WeeChat: 0.3.2 - 1.9

External links

http://weechat.org/download/security/
http://weechat.org/news/98/20170923-Version-1.9.1-security-release/
http://github.com/weechat/weechat/commit/f105c6f0b56fb5687b2d2aedf37cb1d1b434d556


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.



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