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01 Record

CVE-2017-7526

libgcrypt before version 1.7.8 is vulnerable to a cache side-channel attack resulting into a complete break of RSA-1024 while using the left-to-right method for computing the sliding-window expansion.

MediumPUBLISHEDCNA: redhat
CNA base score6.1 CVSS v3.xCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N

02 Description

libgcrypt before version 1.7.8 is vulnerable to a cache side-channel attack resulting into a complete break of RSA-1024 while using the left-to-right method for computing the sliding-window expansion.

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
3.83% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 89.7% of scored records. A rank, not a probability.
NVD base score
6.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2018-07-26 13:00Z8 YR AGO
Last updated
2025-12-17 22:06Z10 MO AGO
Reserved
2017-04-05
Assigning CNA
redhat
Record state
PUBLISHED
Severity
Medium (CVSS 6.1)
CNA CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N
Weaknesses
  • CWE-200Exposure of Sensitive Information to an Unauthorized ActorClass
  • CWE-310
Data version
5.2
Document digest
f807f2d3ff72e09780150cf6cd32c3b9cc4ebb6b60276e169eca65a545f3f625

05 Affected products

VendorProductVersionsPlatforms
GnuPGlibgcrypt1.7.8—

06 References

07 Fixed in

Arch Linux

  • libgcrypt
    Fixed in 1.7.8-1

Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.

Debian 12

  • gnupg1
    Fixed in 1.4.22-1
  • libgcrypt20
    Fixed in 1.7.8-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • gnupg1
    Fixed in 1.4.22-1
  • libgcrypt20
    Fixed in 1.7.8-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • gnupg1
    Fixed in 1.4.22-1
  • libgcrypt20
    Fixed in 1.7.8-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 14.04 LTS

  • gnupg
    Fixed in 1.4.16-1ubuntu2.6
  • libgcrypt11
    Fixed in 1.5.3-2ubuntu4.5

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • gnupg
    Fixed in 1.4.20-1ubuntu3.3
  • libgcrypt20
    Fixed in 1.6.5-2ubuntu0.3

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.