Home/CVE/The mpi_powm function in Libgcrypt before 1.6.3 and GnuPG before 1.4.19 allows attackers to obtain sensitive information
CVE

CVE-2015-0837

The mpi_powm function in Libgcrypt before 1.6.3 and GnuPG before 1.4.19 allows attackers to obtain sensitive information

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.".

MEDIUM · CVSS 5.9 EPSS 0.00677
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-203Observable Discrepancy
▤

Affected Products & Versions

3
gnupg< 1.4.19
gnupg libgcrypt< 1.6.3
debian linuxall versions
▣

Scoring & Timeline

5.9
MEDIUM · CVSS v3.1 · security@debian.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD29 Nov 2019 · 10:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
⚑

Vendor Advisories

5
suse-csafopenSUSE-SU-2024:10037-1
suse-csafSUSE-SU-2015:1511-1
suse-csafSUSE-SU-2015:1626-1
usnUSN-2555-1
usnUSN-2554-1
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.debian.org/security/2015/dsa-3184Third Party Advisory
http://www.debian.org/security/2015/dsa-3185Third Party Advisory
https://ieeexplore.ieee.org/document/7163050Third Party Advisory
https://lists.gnupg.org/pipermail/gnupg-announce/2015q1/000363.htmlMailing ListVendor Advisory
https://lists.gnupg.org/pipermail/gnupg-announce/2015q1/000364.htmlMailing ListVendor Advisory
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