CVE-2016-4579: Input Validation
First published: Mon Jun 13 2016(Updated: )
Libksba before 1.3.4 allows remote attackers to cause a denial of service (out-of-bounds read and crash) via unspecified vectors, related to the "returned length of the object from _ksba_ber_parse_tl."
Credit: meissner@suse.de
| Affected Software | Affected Version | How to fix |
|---|---|---|
| GnuPG Libksba | <=1.3.3 | |
| openSUSE | =42.1 | |
| Ubuntu Linux | =12.04 | |
| Ubuntu Linux | =14.04 | |
| Ubuntu Linux | =15.10 | |
| Ubuntu Linux | =16.04 |
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Reference Links
- http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libksba.git;a=commit;h=a7eed17a0b2a1c09ef986f3b4b323cd31cea2b64
- http://lists.opensuse.org/opensuse-updates/2016-06/msg00028.html
- http://www.openwall.com/lists/oss-security/2016/05/10/8
- http://www.openwall.com/lists/oss-security/2016/05/11/10
- http://www.ubuntu.com/usn/USN-2982-1
- https://security.gentoo.org/glsa/201706-22
- http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libksba.git%3Ba=commit%3Bh=a7eed17a0b2a1c09ef986f3b4b323cd31cea2b64
Frequently Asked Questions
What is the severity of CVE-2016-4579?
CVE-2016-4579 has been classified as a high severity vulnerability due to its potential to cause a denial of service.
How do I fix CVE-2016-4579?
To fix CVE-2016-4579, upgrade libksba to version 1.3.4 or later.
Which versions of software are affected by CVE-2016-4579?
CVE-2016-4579 affects libksba versions before 1.3.4, as well as specific versions of Ubuntu and openSUSE.
What type of attack does CVE-2016-4579 exploit?
CVE-2016-4579 can be exploited by remote attackers to trigger an out-of-bounds read leading to a crash.
Is there a workaround for CVE-2016-4579?
There is no documented workaround for CVE-2016-4579; upgrading to a secure version is the recommended approach.
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- agent/softwarecombine
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- agent/event
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- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/gnupg
- canonical/gnupg libksba
- version/gnupg libksba/1.3.3
- vendor/opensuse
- canonical/opensuse
- version/opensuse/42.1
- vendor/canonical
- canonical/ubuntu linux
- version/ubuntu linux/12.04
- version/ubuntu linux/14.04
- version/ubuntu linux/15.10
- version/ubuntu linux/16.04