Red Hat Enterprise Linux 8.8 Extended Update Support update for tcpdump

1) Use-after-free

EUVDB-ID: #VU86208

Risk: Medium

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

CVE-ID: CVE-2021-41043

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The vulnerability exists due to a use-after-free error in AddressSanitizer. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux for ARM 64 - Extended Update Support: 8.8

Red Hat Enterprise Linux for Power, little endian - Extended Update Support: 8.8

Red Hat Enterprise Linux for IBM z Systems - Extended Update Support: 8.8

Red Hat Enterprise Linux for x86_64 - Extended Update Support: 8.8

tcpdump (Red Hat package): before 4.9.3-3.el8_8.1

External links

http://access.redhat.com/errata/RHSA-2024:0571

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.