CVE-2010-2547 Use after free in n/a
Remote attackers can cause a crash or potentially execute arbitrary code by providing a crafted certificate with many Subject Alternate Names to GPGSM.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2010-2547?
CVE-2010-2547 is a high-severity use after free vulnerability in Debian Debian Linux, published on 5 Aug 2010. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Use-after-free vulnerability in kbx/keybox-blob.c in GPGSM in GnuPG 2.x through 2.0.16 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a certificate with a large number of Subject Alternate Names, which is not properly handled in a realloc operation when importing the certificate or verifying its signature.
Weakness: CWE-416
Which versions are affected by CVE-2010-2547?
It affects 3 products.
Linux distribution packages (4)
gnupg2 Red Hat:enterprise_linux:5::client | All versions | 0:2.0.10-3.el5_5.1 |
gnupg2-debuginfo Red Hat:enterprise_linux:5::client | All versions | 0:2.0.10-3.el5_5.1 |
gnupg2 Red Hat:enterprise_linux:5::server | All versions | 0:2.0.10-3.el5_5.1 |
gnupg2-debuginfo Red Hat:enterprise_linux:5::server | All versions | 0:2.0.10-3.el5_5.1 |
Products include Debian Debian Linux, Fedoraproject Fedora, Gnupg Gnupg.
How do I fix CVE-2010-2547?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2010-2547 being exploited?
There is no known exploitation of CVE-2010-2547 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2010-2547, DSA-2076-1, GHSA-jjg3-cx5h-88wm, RHSA-2010:0603.