Information disclosure in Vim

1) Out-of-bounds read

EUVDB-ID: #VU63647

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-1769

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in get_one_sourceline() function. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Vim: 8.2.0 - 8.2.4974

External links

http://huntr.dev/bounties/522076b2-96cb-4df6-a504-e6e2f64c171c
http://github.com/vim/vim/commit/4748c4bd64610cf943a431d215bb1aad51f8d0b4
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QKIX5HYKWXWG6QBCPPTPQ53GNOFHSAIS/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IUPOLEX5GXC733HL4EFYMHFU7NISJJZG/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BFAZTAT5CZC2R6KYDYA2HBAVEDSIX6MW/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open a file.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.