UBUNTU-CVE-2017-9526

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Source
https://ubuntu.com/security/CVE-2017-9526
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-9526.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2017-9526
Upstream
Downstream
Related
Published
2017-06-10T00:00:00Z
Modified
2025-07-16T07:33:39.820418Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
  • Ubuntu - low
Summary
[none]
Details

In Libgcrypt before 1.7.7, an attacker who learns the EdDSA session key (from side-channel observation during the signing process) can easily recover the long-term secret key. 1.7.7 makes a cipher/ecc-eddsa.c change to store this session key in secure memory, to ensure that constant-time point operations are used in the MPI library.

References

Affected packages

Ubuntu:14.04:LTS / libgcrypt11

Package

Name
libgcrypt11
Purl
pkg:deb/ubuntu/libgcrypt11@1.5.3-2ubuntu4.4?arch=source&distro=trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.5.3-2ubuntu4.4

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

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "1.5.3-2ubuntu4.4",
            "binary_name": "libgcrypt11"
        },
        {
            "binary_version": "1.5.3-2ubuntu4.4",
            "binary_name": "libgcrypt11-dbg"
        },
        {
            "binary_version": "1.5.3-2ubuntu4.4",
            "binary_name": "libgcrypt11-dbgsym"
        },
        {
            "binary_version": "1.5.3-2ubuntu4.4",
            "binary_name": "libgcrypt11-dev"
        },
        {
            "binary_version": "1.5.3-2ubuntu4.4",
            "binary_name": "libgcrypt11-dev-dbgsym"
        },
        {
            "binary_version": "1.5.3-2ubuntu4.4",
            "binary_name": "libgcrypt11-doc"
        },
        {
            "binary_version": "1.5.3-2ubuntu4.4",
            "binary_name": "libgcrypt11-udeb"
        },
        {
            "binary_version": "1.5.3-2ubuntu4.4",
            "binary_name": "libgcrypt11-udeb-dbgsym"
        }
    ]
}

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 

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