Fedora EPEL 7 update for python3-pygments

Published: 2023-08-16

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2021-20270 CVE-2021-27291
CWE-ID	CWE-835 CWE-399
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Fedora Operating systems & Components / Operating system python3-pygments Operating systems & Components / Operating system package or component
Vendor	Fedoraproject

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Infinite loop

EUVDB-ID: #VU51449

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-20270

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Exploit availability: No

Description

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

The vulnerability exists due to infinite loop. A remote attacker can consume all available system resources and cause denial of service conditions.

Mitigation

Upgrade python3-pygments to version 2.4.2-1.el7.

Vulnerable software versions

Fedora: 7

python3-pygments: before 2.4.2-1.el7

External links

http://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2023-f41d6b3e32

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.

2) Resource management error

EUVDB-ID: #VU51776

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-2021-27291

CWE-ID: CWE-399 - Resource Management Errors