CVE-2014-9087: Integer Underflow
First published: Mon Dec 01 2014(Updated: )
Integer underflow in the ksba_oid_to_str function in Libksba before 1.3.2, as used in GnuPG, allows remote attackers to cause a denial of service (crash) via a crafted OID in a (1) S/MIME message or (2) ECC based OpenPGP data, which triggers a buffer overflow.
Credit: security@debian.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mageia | =3.0 | |
| Mageia | =4.0 | |
| Debian Linux | =7.0 | |
| Debian Linux | =8.0 | |
| CentOS Libksba | <1.3.2 | |
| Ubuntu | =12.04 | |
| Ubuntu | =14.04 | |
| Ubuntu | =14.10 | |
| GnuPG 2 (Gnu Privacy Guard) | =2.1.0 | |
| GnuPG 2 (Gnu Privacy Guard) | =2.1.0-beta1 |
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Reference Links
- http://advisories.mageia.org/MGASA-2014-0498.html
- http://lists.gnupg.org/pipermail/gnupg-announce/2014q4/000359.html
- http://secunia.com/advisories/60073
- http://secunia.com/advisories/60189
- http://secunia.com/advisories/60233
- http://www.debian.org/security/2014/dsa-3078
- http://www.mandriva.com/security/advisories?name=MDVSA-2014:234
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:151
- http://www.securityfocus.com/bid/71285
- http://www.ubuntu.com/usn/USN-2427-1
- https://blog.fuzzing-project.org/2-Buffer-overflow-and-other-minor-issues-in-GnuPG-and-libksba-TFPA-0012014.html
Frequently Asked Questions
What is the severity of CVE-2014-9087?
CVE-2014-9087 has a medium severity level due to its potential to cause a denial of service.
How do I fix CVE-2014-9087?
To fix CVE-2014-9087, you should upgrade Libksba to version 1.3.2 or later.
Which software is affected by CVE-2014-9087?
CVE-2014-9087 affects Libksba versions prior to 1.3.2, as well as various distributions like Debian and Ubuntu.
What kind of attacks can CVE-2014-9087 facilitate?
CVE-2014-9087 enables remote attackers to crash systems via crafted S/MIME messages or ECC-based OpenPGP data.
Is CVE-2014-9087 still a risk for supported systems?
CVE-2014-9087 remains a risk for systems not updated to the patched version of Libksba.
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- vendor/mageia
- canonical/mageia
- version/mageia/3.0
- version/mageia/4.0
- vendor/debian
- canonical/debian linux
- version/debian linux/7.0
- version/debian linux/8.0
- vendor/gnupg
- canonical/centos libksba
- vendor/canonical
- canonical/ubuntu
- version/ubuntu/12.04
- version/ubuntu/14.04
- version/ubuntu/14.10
- canonical/gnupg 2 (gnu privacy guard)
- version/gnupg 2 (gnu privacy guard)/2.1.0
- version/gnupg 2 (gnu privacy guard)/2.1.0-beta1