1. Gentoo Linux Security Advisory
| Advisory Reference | GLSA 200501-38 / Perl |
| Release Date | January 26, 2005 |
| Latest Revision | March 15, 2005: 03 |
| Impact | normal |
| Exploitable | local |
| Package | Vulnerable versions | Unaffected versions | Architecture(s) |
| dev-perl/DBI | <= 1.38 | revision >= 1.37-r1, >= 1.38-r1 | All supported architectures |
| dev-lang/perl | <= 5.8.6-r3 | >= 5.8.6-r4, revision >= 5.8.5-r5, revision >= 5.8.4-r4, revision >= 5.8.2-r4 | All supported architectures |
Related bugreports: #75696, #78634, #79685
The Perl DBI library and File::Path::rmtree function are vulnerable to symlink attacks.
Perl is a cross platform programming language. The DBI is the standard database interface module for Perl.
Javier Fernandez-Sanguino Pena discovered that the DBI library creates temporary files in an insecure, predictable way (CAN-2005-0077). Paul Szabo found out that "File::Path::rmtree" is vulnerable to various race conditions (CAN-2004-0452, CAN-2005-0448).
A local attacker could create symbolic links in the temporary files directory that point to a valid file somewhere on the filesystem. When the DBI library or File::Path::rmtree is executed, this could be used to overwrite or remove files with the rights of the user calling these functions.
There are no known workarounds at this time.
All Perl users should upgrade to the latest version:
Code Listing 3.1: Resolution |
# emerge --sync # emerge --ask --oneshot --verbose dev-lang/perl |
All DBI library users should upgrade to the latest version:
Code Listing 3.2: Resolution |
# emerge --sync # emerge --ask --oneshot --verbose dev-perl/DBI |