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AUSCERT External Security Bulletin Redistribution
ESB-2021.2577
USN-5027-1: PEAR vulnerability
30 July 2021
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AusCERT Security Bulletin Summary
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Product: PEAR
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Overwrite Arbitrary Files -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2021-32610
Reference: ESB-2021.2533
Original Bulletin:
https://ubuntu.com/security/notices/USN-5027-1
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USN-5027-1: PEAR vulnerability
29 July 2021
PEAR could be made to overwrite files as the administrator.
Releases
o Ubuntu 21.04
o Ubuntu 20.04 LTS
o Ubuntu 18.04 LTS
Packages
o php-pear - PHP Extension and Application Repository
Details
It was discovered that PEAR incorrectly handled symbolic links in archives.
A remote attacker could possibly use this issue to execute arbitrary code.
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 21.04
o php-pear - 1:1.10.9+submodules+notgz-1.1ubuntu1.1
Ubuntu 20.04
o php-pear - 1:1.10.9+submodules+notgz-1ubuntu0.20.04.3
Ubuntu 18.04
o php-pear - 1:1.10.5+submodules+notgz-1ubuntu1.18.04.4
In general, a standard system update will make all the necessary changes.
References
o CVE-2021-32610
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