Executive Summary

Summary
Title libksba: Multiple vulnerabilities
Informations
Name GLSA-201604-04 First vendor Publication 2016-04-26
Vendor Gentoo Last vendor Modification 2016-04-26
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:P)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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.

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:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/libksba-1.3.3"

References

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

http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libksba.git;a=commit;h=07116a314f4dcd4d96990bbd74db95a03a9f650a
[ 2 ] Integer overflow in the BER decoder src/ber-decoder.c

http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libksba.git;a=commit;h=aea7b6032865740478ca4b706850a5217f1c3887
[ 3 ] Integer overflow in the DN decoder src/dn.c

http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libksba.git;a=commit;h=243d12fdec66a4360fbb3e307a046b39b5b4ffc3

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

https://security.gentoo.org/glsa/201604-04

Original Source

Url : http://security.gentoo.org/glsa/glsa-201604-04.xml

CWE : Common Weakness Enumeration

% Id Name
75 % CWE-119 Failure to Constrain Operations within the Bounds of a Memory Buffer
25 % CWE-20 Improper Input Validation

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Os 2

Nessus® Vulnerability Scanner

Date Description
2016-06-06 Name : The remote Amazon Linux AMI host is missing a security update.
File : ala_ALAS-2016-712.nasl - Type : ACT_GATHER_INFO
2016-05-23 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2016-624.nasl - Type : ACT_GATHER_INFO
2016-05-18 Name : The remote Ubuntu host is missing a security-related patch.
File : ubuntu_USN-2982-1.nasl - Type : ACT_GATHER_INFO
2016-05-03 Name : The remote FreeBSD host is missing a security-related update.
File : freebsd_pkg_a113404810c611e694fa002590263bf5.nasl - Type : ACT_GATHER_INFO
2016-04-27 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201604-04.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
2
3
Date Informations
2016-06-14 17:39:15
  • Multiple Updates
2016-06-14 00:37:57
  • Multiple Updates
2016-04-28 13:28:17
  • Multiple Updates
2016-04-27 00:24:32
  • First insertion