Amazon Linux AMI update for xterm

1) Memory corruption

EUVDB-ID: #VU50810

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-2021-27135

CWE-ID: CWE-119 - Memory corruption

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 when processing UTF-8 character sequences. A remote attacker can pass specially crafted data to the application, trigger memory corruption and perform a denial of service (DoS) attack.

Mitigation

Update the affected packages:

i686:
    xterm-295-3.15.amzn1.i686
    xterm-debuginfo-295-3.15.amzn1.i686

src:
    xterm-295-3.15.amzn1.src

x86_64:
    xterm-295-3.15.amzn1.x86_64
    xterm-debuginfo-295-3.15.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

External links

http://alas.aws.amazon.com/ALAS-2021-1489.html

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.