CVE-2015-0837
First published: Fri Nov 29 2019(Updated: )
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."
Credit: security@debian.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Gnupg Gnupg | <1.4.19 | |
| GnuPG Libgcrypt | <1.6.3 | |
| Debian Debian Linux | =7.0 | |
| Debian Debian Linux | =8.0 |
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Reference Links
Frequently Asked Questions
What is CVE-2015-0837?
CVE-2015-0837 is a vulnerability in Libgcrypt and GnuPG that allows attackers to obtain sensitive information through a timing-based side-channel attack.
How does CVE-2015-0837 work?
CVE-2015-0837 leverages timing differences when accessing a pre-computed table during modular exponentiation, allowing attackers to obtain sensitive information.
What software is affected by CVE-2015-0837?
GnuPG versions up to and excluding 1.4.19 and Libgcrypt versions up to and excluding 1.6.3 are affected by CVE-2015-0837.
What is the severity of CVE-2015-0837?
CVE-2015-0837 has a severity rating of 5.9, which is considered medium.
How can I fix CVE-2015-0837?
To fix CVE-2015-0837, users should update to GnuPG version 1.4.19 or newer and Libgcrypt version 1.6.3 or newer.
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- vendor/gnupg
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- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/7.0
- version/debian debian linux/8.0