Vulnerability identifier: #VU72127
Vulnerability risk: Low
CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-20
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
less
Client/Desktop applications /
Software for system administration
Vendor: GNU
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of the ANSI escape sequences in the "less -R" output. A remote attacker can trick the victim to run the command against the specially crafted data and perform a denial of service (DoS) attack.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
less: 566 - 608
External links
http://github.com/gwsw/less/commit/a78e1351113cef564d790a730d657a321624d79c
http://www.greenwoodsoftware.com/less/news.609.html
http://www.openwall.com/lists/oss-security/2023/02/07/7
http://www.openwall.com/lists/oss-security/2023/02/07/7
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.