Gentoo update for PEAR Archive_Tar



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-1000888
CWE-ID CWE-502
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
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Operating systems & Components / Operating system

Vendor Gentoo

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Deserialization of Untrusted Data

EUVDB-ID: #VU17066

Risk: Medium

CVSSv3.1: 3.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2018-1000888

CWE-ID: CWE-502 - Deserialization of Untrusted Data

Exploit availability: Yes

Description

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

The vulnerability exists due to insecure input validation when processing serialized data within tar files. A remote attacker can create a tar file with `phar://[path_to_malicious_phar_file]` as path  and execute arbitrary code on the target system.

Mitigation

Update the affected packages.

Vulnerable software versions

Gentoo Linux: All versions

CPE2.3 External links

http://security.gentoo.org/
http://security.gentoo.org/glsa/202006-14


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. However, proof of concept for this vulnerability is available.



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