Backdoor in PHP PEAR

Published: 2019-01-21

Risk	Critical
Patch available	YES
Number of vulnerabilities	1
CVE-ID	N/A
CWE-ID	CWE-912
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	PEAR Universal components / Libraries / Scripting languages
Vendor	PHP Group

Security Bulletin

This security bulletin contains one critical risk vulnerability.

1) Backdoor

EUVDB-ID: #VU17096

Risk: Critical

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-912 - Hidden Functionality (Backdoor)

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system.

The issue exists within the PHP PEAR software, downloaded from the official repository within the last 6 month. Unknown attackers compromised the official repository and implanted malicious code into it.

If you have updated your PEAR installation within the last 6 month, most likely your server is compromised.

Mitigation

Update to version 1.10.9.

Vulnerable software versions

PEAR: 1.10.7 - 1.10.8

External links

http://blog.pear.php.net/2018/12/20/security-vulnerability-announcement-archive_tar/

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.