USN-5787-1

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Source
https://ubuntu.com/security/notices/USN-5787-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5787-1.json
JSON Data
https://api.test.osv.dev/v1/vulns/USN-5787-1
Upstream
Related
Published
2023-01-05T12:43:29.051320Z
Modified
2025-07-16T08:56:03.765788Z
Summary
libksba vulnerability
Details

It was discovered that Libksba incorrectly handled parsing CRL signatures. A remote attacker could use this issue to cause Libksba to crash, resulting in a denial of service, or possibly execute arbitrary code.

References

Affected packages

Ubuntu:18.04:LTS / libksba

Package

Name
libksba
Purl
pkg:deb/ubuntu/libksba@1.3.5-2ubuntu0.18.04.2?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.3.5-2ubuntu0.18.04.2

Affected versions

1.*

1.3.5-2
1.3.5-2ubuntu0.18.04.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libksba-dev",
            "binary_version": "1.3.5-2ubuntu0.18.04.2"
        },
        {
            "binary_name": "libksba-mingw-w64-dev",
            "binary_version": "1.3.5-2ubuntu0.18.04.2"
        },
        {
            "binary_name": "libksba8",
            "binary_version": "1.3.5-2ubuntu0.18.04.2"
        },
        {
            "binary_name": "libksba8-dbgsym",
            "binary_version": "1.3.5-2ubuntu0.18.04.2"
        }
    ]
}

Ubuntu:20.04:LTS / libksba

Package

Name
libksba
Purl
pkg:deb/ubuntu/libksba@1.3.5-2ubuntu0.20.04.2?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.3.5-2ubuntu0.20.04.2

Affected versions

1.*

1.3.5-2
1.3.5-2ubuntu0.20.04.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libksba-dev",
            "binary_version": "1.3.5-2ubuntu0.20.04.2"
        },
        {
            "binary_name": "libksba-mingw-w64-dev",
            "binary_version": "1.3.5-2ubuntu0.20.04.2"
        },
        {
            "binary_name": "libksba8",
            "binary_version": "1.3.5-2ubuntu0.20.04.2"
        },
        {
            "binary_name": "libksba8-dbgsym",
            "binary_version": "1.3.5-2ubuntu0.20.04.2"
        }
    ]
}

Ubuntu:22.04:LTS / libksba

Package

Name
libksba
Purl
pkg:deb/ubuntu/libksba@1.6.0-2ubuntu0.2?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.6.0-2ubuntu0.2

Affected versions

1.*

1.5.1-1
1.5.1-1build1
1.6.0-2
1.6.0-2build1
1.6.0-2ubuntu0.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libksba-dev",
            "binary_version": "1.6.0-2ubuntu0.2"
        },
        {
            "binary_name": "libksba-mingw-w64-dev",
            "binary_version": "1.6.0-2ubuntu0.2"
        },
        {
            "binary_name": "libksba8",
            "binary_version": "1.6.0-2ubuntu0.2"
        },
        {
            "binary_name": "libksba8-dbgsym",
            "binary_version": "1.6.0-2ubuntu0.2"
        }
    ]
}