openEuler update for libarchive



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-36976
CWE-ID CWE-416
Exploitation vector Network
Public exploit N/A
Vulnerable software
 openEuler
Operating systems & Components / Operating system

libarchive-help
Operating systems & Components / Operating system package or component

libarchive-debugsource
Operating systems & Components / Operating system package or component

libarchive-devel
Operating systems & Components / Operating system package or component

libarchive-debuginfo
Operating systems & Components / Operating system package or component

libarchive
Operating systems & Components / Operating system package or component

Vendor openEuler

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Use-after-free

EUVDB-ID: #VU59459

Risk: Medium

CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-36976

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 copy_string. A remote attacker can cause a denial of service condition on the target system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 20.03 LTS SP2

libarchive-help: before 3.4.3-3

libarchive-debugsource: before 3.4.3-3

libarchive-devel: before 3.4.3-3

libarchive-debuginfo: before 3.4.3-3

libarchive: before 3.4.3-3

CPE2.3 External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1398


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.



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