CVE-2015-0837: debian debian_linux Observable Discrepancy
CVSS: 5.9v3.1MediumModified
AliasesMGASA-2015-0360SUSE-SU-2015:1511-1UBUNTU-CVE-2015-0837DEBIAN-CVE-2015-0837
Published 29-11-2019Last modified 06-08-2024
Vulnerability summary
CVE-2015-0837 is a medium (CVSS 5.9) Observable Discrepancy vulnerability in debian debian_linux. EPSS estimates a 1.95% chance of exploitation in the next 30 days, higher than 79.9% of scored vulnerabilities.
CVSS score
5.9/10
010
Medium · v3.1 (NVD)EPSS score
1.95%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 9 · Related 4Timeline
- 29-11-2019PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
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."
CVSS metrics
4 scores · 3 sources · 2 versionsMedium 5.9Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:NSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- OSV · DebianEcosystem advisory · calculated5.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Medium 4.3Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:P/I:N/A:NSourcesSingle source
EPSS trend
Probability
1.95%
Chance of exploitation in the next 30 days
Percentile
80%
Versus all other CVEs
30-day change
0.00 pp
From 1.95% on 18-09-2026
18-09-202618-10-2026
EPSS score1.95%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Suse4 products
- libgcrypt&distro=SUSE Linux Enterprise Desktop 12< 1.6.1-16.1
- libgcrypt&distro=SUSE Linux Enterprise Server 12< 1.6.1-16.1
- libgcrypt&distro=SUSE Linux Enterprise Server for SAP Applications 12< 1.6.1-16.1
- libgcrypt&distro=SUSE Linux Enterprise Software Development Kit 12< 1.6.1-16.1
Ubuntu3 products
- gnupg< 1.4.16-1ubuntu2.3
- libgcrypt11< 1.5.3-2ubuntu4.2
- libgcrypt20< 1.6.1-2ubuntu1.14.04.1
Debian2 products
- libgcrypt20< 1.6.3-2
- debian_linuxEOL7.0 | 8.0
Mageia1 product
- libgcrypt< 1.5.4-1.2.mga4
6 vendors · 14 products
References
17 links
- lists.gnupg.org/pipermail/gnupg-announce/2015q1/000363.htmlX Refsource CONFIRMMailing ListVendor Advisory
- lists.gnupg.org/pipermail/gnupg-announce/2015q1/000364.htmlX Refsource CONFIRMMailing ListVendor Advisory
- bugzilla.suse.com/920057REPORT
Show all 17 references
- bugzilla.suse.com/938343REPORT