CVE-2015-0837 Information disclosure in GnuPG
Attackers can obtain sensitive information via timing side-channel attacks during modular exponentiation in Libgcrypt and GnuPG.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2015-0837?
CVE-2015-0837 is a medium-severity vulnerability in Debian Debian Linux, published on 29 Nov 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The mpi_powm function in Libgcrypt before 1.6.3 and GnuPG before 1.4.19 allows attackers to obtain sensitive information by leveraging timing differences when accessing a pre-computed table during modular exponentiation, related to a "Last-Level Cache Side-Channel Attack."
Weakness: CWE-203
Which versions are affected by CVE-2015-0837?
It affects 3 products.
Linux distribution packages (4)
libgcrypt SUSE:Linux Enterprise Desktop 12 | All versions | 1.6.1-16.1 |
libgcrypt SUSE:Linux Enterprise Server 12 | All versions | 1.6.1-16.1 |
libgcrypt SUSE:Linux Enterprise Server for SAP Applications 12 | All versions | 1.6.1-16.1 |
libgcrypt SUSE:Linux Enterprise Software Development Kit 12 | All versions | 1.6.1-16.1 |
Products include Debian Debian Linux, Gnupg Gnupg, Gnupg Libgcrypt.
How do I fix CVE-2015-0837?
Upgrade to a fixed version.
Is CVE-2015-0837 being exploited?
There is no known exploitation of CVE-2015-0837 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2015-0837, GHSA-3ccv-3j4f-926q, MGASA-2015-0360, SUSE-SU-2015:1511-1, UBUNTU-CVE-2015-0837.