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Joined: 12 May 2004
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PostPosted: Tue Apr 26, 2016 9:26 pm    Post subject: [ GLSA 201604-04 ] libksba Reply with quote

Gentoo Linux Security Advisory

Title: libksba: Multiple vulnerabilities (GLSA 201604-04)
Severity: normal
Exploitable: remote
Date: April 26, 2016
Bug(s): #546464
ID: 201604-04

Synopsis

Multiple vulnerabilities have been found in libksba, allowing a
possible Denial of Service and unspecified other vectors through integer
overflows.


Background

Libksba is a X.509 and CMS (PKCS#7) library.

Affected Packages

Package: dev-libs/libksba
Vulnerable: < 1.3.3
Unaffected: >= 1.3.3
Architectures: All supported architectures


Description

libksba is vulnerable to two integer overflows and a Denial of Service
vulnerability. Please read the references for additional details.


Impact

Remote attackers could cause Denial of Service or unspecified other
vectors through various integer overflows.


Workaround

There is no known workaround at this time.

Resolution

All libksba users should upgrade to the latest version:
Code:
# emerge --sync
      # emerge --ask --oneshot --verbose ">=dev-libs/libksba-1.3.3"
   


References


Denial of Service due to stack overflow in src/ber-decoder.c


Integer overflow in the BER decoder src/ber-decoder.c


Integer overflow in the DN decoder src/dn.c
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