15375 : GNU sharutils shar Output Overflow
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Info

Last Modified
6 months ago

Percent Complete
95%

Disclosure
Oct 01, 2004

Discovery
Unknown

Dates

Exploit
Unknown

Solution
Unknown

Description

 A local overflow exists in GNU sharutils shar command. GNU shar fails to check the length of data returned by the shar command resulting in a buffer overflow. With a specially crafted shar archive, an attacker can cause loss of integrity.

Classification

 Location: Local Access Required
Attack Type: Input Manipulation
Impact: Loss of Integrity
Exploit: Exploit Unknown

Solution

 Upgrade to version 4.2.1-r10 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products
Gentoo Linux
Watch-list
app-arch/sharutils
Watch-list
 4.2.1-r9
4.2.1-r10

References

Tools & Filters

Nessus

 15503 18002 18147

Credit
  • Ulf Härnhammar - Swedish IT Incident Centre

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