openEuler update for python-pillow

1) Incorrect Regular Expression

EUVDB-ID: #VU68608

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-2021-23437

CWE-ID: CWE-185 - Incorrect Regular Expression

Exploit availability: No

Description

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

The vulnerability exists due to insufficient input validation when processing regular expressions. A remote attacker can pass specially crafted data to the application and perform regular expression denial of service (ReDos) attack.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 20.03 LTS SP2

python3-pillow-help: before 8.1.1-7

python3-pillow-tk: before 8.1.1-7

python3-pillow: before 8.1.1-7

python3-pillow-qt: before 8.1.1-7

python-pillow-debugsource: before 8.1.1-7

python-pillow-debuginfo: before 8.1.1-7

python3-pillow-devel: before 8.1.1-7

python-pillow: before 8.1.1-7

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1383

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.