UBUNTU-CVE-2017-7526

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Source
https://ubuntu.com/security/CVE-2017-7526
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-7526.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2017-7526
Upstream
Downstream
Related
Published
2017-06-29T00:00:00Z
Modified
2025-09-08T16:44:11Z
Severity
  • 6.8 (Medium) CVSS_V3 - CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N CVSS Calculator
  • 6.1 (Medium) CVSS_V3 - CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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. The same attack is believed to work on RSA-2048 with moderately more computation. This side-channel requires that attacker can run arbitrary software on the hardware where the private RSA key is used.

References

Affected packages

Ubuntu:14.04:LTS / gnupg

Package

Name
gnupg
Purl
pkg:deb/ubuntu/gnupg@1.4.16-1ubuntu2.6?arch=source&distro=trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.4.16-1ubuntu2.6

Affected versions

1.*

1.4.14-1ubuntu2
1.4.15-1.1ubuntu1
1.4.15-1.1ubuntu2
1.4.15-2ubuntu1
1.4.16-1ubuntu1
1.4.16-1ubuntu2
1.4.16-1ubuntu2.1
1.4.16-1ubuntu2.3
1.4.16-1ubuntu2.4
1.4.16-1ubuntu2.5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gnupg",
            "binary_version": "1.4.16-1ubuntu2.6"
        },
        {
            "binary_name": "gnupg-curl",
            "binary_version": "1.4.16-1ubuntu2.6"
        },
        {
            "binary_name": "gpgv",
            "binary_version": "1.4.16-1ubuntu2.6"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:14.04:LTS / libgcrypt11

Package

Name
libgcrypt11
Purl
pkg:deb/ubuntu/libgcrypt11@1.5.3-2ubuntu4.5?arch=source&distro=trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.5.3-2ubuntu4.5

Affected versions

1.*

1.5.0-3ubuntu3
1.5.3-2ubuntu1
1.5.3-2ubuntu4
1.5.3-2ubuntu4.1
1.5.3-2ubuntu4.2
1.5.3-2ubuntu4.3
1.5.3-2ubuntu4.4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libgcrypt11",
            "binary_version": "1.5.3-2ubuntu4.5"
        },
        {
            "binary_name": "libgcrypt11-dev",
            "binary_version": "1.5.3-2ubuntu4.5"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:16.04:LTS / gnupg

Package

Name
gnupg
Purl
pkg:deb/ubuntu/gnupg@1.4.20-1ubuntu3.3?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.4.20-1ubuntu3.3

Affected versions

1.*

1.4.18-7ubuntu1
1.4.19-6ubuntu1
1.4.20-1ubuntu1
1.4.20-1ubuntu2
1.4.20-1ubuntu3
1.4.20-1ubuntu3.1
1.4.20-1ubuntu3.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "gnupg",
            "binary_version": "1.4.20-1ubuntu3.3"
        },
        {
            "binary_name": "gnupg-curl",
            "binary_version": "1.4.20-1ubuntu3.3"
        },
        {
            "binary_name": "gpgv",
            "binary_version": "1.4.20-1ubuntu3.3"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:16.04:LTS / libgcrypt20

Package

Name
libgcrypt20
Purl
pkg:deb/ubuntu/libgcrypt20@1.6.5-2ubuntu0.3?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.6.5-2ubuntu0.3

Affected versions

1.*

1.6.3-2ubuntu1
1.6.4-3
1.6.4-4
1.6.4-5
1.6.5-2
1.6.5-2ubuntu0.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libgcrypt11-dev",
            "binary_version": "1.5.4-3+really1.6.5-2ubuntu0.3"
        },
        {
            "binary_name": "libgcrypt20",
            "binary_version": "1.6.5-2ubuntu0.3"
        },
        {
            "binary_name": "libgcrypt20-dev",
            "binary_version": "1.6.5-2ubuntu0.3"
        }
    ],
    "availability": "No subscription required"
}