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[ GLSA 200610-05 ] CAPI4Hylafax fax receiver: Execution of arbitrary code
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PostPosted: Tue Oct 17, 2006 8:26 pm    Post subject: [ GLSA 200610-05 ] CAPI4Hylafax fax receiver: Execution of a Reply with quote

Gentoo Linux Security Advisory

Title: CAPI4Hylafax fax receiver: Execution of arbitrary code (GLSA 200610-05)
Severity: high
Exploitable: remote
Date: October 17, 2006
Bug(s): #145982
ID: 200610-05

Synopsis

CAPI4Hylafax allows remote attackers to execute arbitrary commands.

Background

CAPI4Hylafax makes it possible to send and receive faxes via CAPI and AVM Fritz!Cards.

Affected Packages

Package: net-misc/capi4hylafax
Vulnerable: < 01.03.00.99.300.3-r1
Unaffected: >= 01.03.00.99.300.3-r1
Architectures: All supported architectures


Description

Lionel Elie Mamane discovered an error in c2faxrecv, which doesn't properly sanitize TSI strings when handling incoming calls.

Impact

A remote attacker can send null () and shell metacharacters in the TSI string from an anonymous fax number, leading to the execution of arbitrary code with the rights of the user running c2faxrecv.

Workaround

There is no known workaround at this time.

Resolution

All CAPI4Hylafax users should upgrade to the latest version:
Code:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/capi4hylafax-01.03.00.99.300.3-r1"


References

CVE-2006-3126
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