Arch Linux Security Advisory ASA-201503-22
=========================================
Severity: Low
Date    : 2015-03-23
CVE-ID  : CVE-2015-1197
Package : cpio
Type    : directory traversal
Remote  : No
Link    : https://wiki.archlinux.org/title/CVE

Summary
======
The package cpio before version 2.11-6 is vulnerable to directory traversal.

Resolution
=========
Upgrade to 2.11-6.

# pacman -Syu "cpio>=2.11-6"

The problem has not been fixed upstream but patches were available.

Workaround
=========
None.

Description
==========
It was reported that cpio is vulnerable to a directory traversal
vulnerability when using the --no-absolute-filenames option. While
extracting an archive, it will extract symlinks and then follow them if
they are referenced in further entries. This can be exploited by a rogue
archive to write to files outside the current directory.

Impact
=====
An attacker is able to use a specially crafted archive containing a
symlink to perform directory traversal resulting in arbitrary file write.

References
=========
https://lists.gnu.org/archive/html/bug-cpio/2015-01/msg00000.html
https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-1197
https://bugs.archlinux.org/task/44173

ArchLinux: 201503-22: cpio: directory traversal

March 23, 2015

Summary

It was reported that cpio is vulnerable to a directory traversal vulnerability when using the --no-absolute-filenames option. While extracting an archive, it will extract symlinks and then follow them if they are referenced in further entries. This can be exploited by a rogue archive to write to files outside the current directory.

Resolution

Upgrade to 2.11-6. # pacman -Syu "cpio>=2.11-6"
The problem has not been fixed upstream but patches were available.

References

https://lists.gnu.org/archive/html/bug-cpio/2015-01/msg00000.html https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-1197 https://bugs.archlinux.org/task/44173

Severity
Package : cpio
Type : directory traversal
Remote : No
Link : https://wiki.archlinux.org/title/CVE

Workaround

None.

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