Denial of service in tcpdump

1) Out-of-bounds write

EUVDB-ID: #VU79709

Risk: Medium

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-2023-1801

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error  within the SMB protocol decoder. A remote attacker can send specially crafted over the network, trigger an out-of-bounds write and crash the application.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Tcpdump: before 4.99.4

External links

http://github.com/the-tcpdump-group/tcpdump/commit/03c037bbd75588beba3ee09f26d17783d21e30bc
http://github.com/the-tcpdump-group/tcpdump/commit/7578e1c04ee280dda50c4c2813e7d55f539c6501
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KOA2BJFERAC3VRQIRHJOWN4HZY4ZA7CH/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WYL5DEVHRJYF2CM5LTCZKEYFYDZAIZSN/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZLLZCG23MU6O4QOG2CX3DLEL3YXP6LAI/

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.