Buffer overflow in WeeChat - CVE-2020-9760
Published: March 25, 2020
Vulnerability identifier: #VU26384
CSH Severity: Medium
CVSS v4.0: 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:Green
CVE-ID: CVE-2020-9760
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: WeeChat.org
Affected software:
WeeChat
WeeChat
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error when a new IRC message 005 is received with longer nick prefixes. A remote attacker can send a specially crafted message 005, trigger memory corruption and cause a denial of service condition on the target system when a new mode is set for a nick.
How to mitigate CVE-2020-9760
Install updates from vendor's website.