SB2023040613 - Amazon Linux AMI update for emacs

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) OS Command Injection (CVE-ID: CVE-2022-45939)

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation when processing name of a source-code file in lib-src/etags.c. A remote attacker can trick the victim to use the "ctags *" command  and execute arbitrary OS commands on the target system in a situation where the current working directory has contents that depend on untrusted input.

2) OS Command Injection (CVE-ID: CVE-2022-48337)

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation when parsing name of a source-code file in lib-src/etags.c. A remote attacker can trick the victim use the "etags -u *" command on the directory with attacker controlled content and execute arbitrary OS commands on the target system.

3) OS Command Injection (CVE-ID: CVE-2022-48339)

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation within the hfy-istext-command() function when parsing the "file" and "srcdir" parameters, if a file name or directory name contains shell metacharacter. A remote attacker can execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation

Install update from vendor's website.

References

• https://alas.aws.amazon.com/ALAS-2023-1712.html