UBUNTU-CVE-2015-1793

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Source
https://ubuntu.com/security/CVE-2015-1793
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2015/UBUNTU-CVE-2015-1793.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2015-1793
Upstream
Withdrawn
2025-07-18T16:43:10Z
Published
2015-07-09T00:00:00Z
Modified
2025-07-16T08:11:25.160987Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

The X509verifycert function in crypto/x509/x509_vfy.c in OpenSSL 1.0.1n, 1.0.1o, 1.0.2b, and 1.0.2c does not properly process X.509 Basic Constraints cA values during identification of alternative certificate chains, which allows remote attackers to spoof a Certification Authority role and trigger unintended certificate verifications via a valid leaf certificate.

References

Affected packages

Ubuntu:14.04:LTS / openssl

Package

Name
openssl
Purl
pkg:deb/ubuntu/openssl@1.0.1f-1ubuntu2.15?arch=source&distro=trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.0.1f-1ubuntu2.15

Affected versions

1.*

1.0.1e-3ubuntu1
1.0.1e-4ubuntu1
1.0.1e-4ubuntu2
1.0.1e-4ubuntu3
1.0.1e-4ubuntu4
1.0.1f-1ubuntu1
1.0.1f-1ubuntu2
1.0.1f-1ubuntu2.1
1.0.1f-1ubuntu2.2
1.0.1f-1ubuntu2.3
1.0.1f-1ubuntu2.4
1.0.1f-1ubuntu2.5
1.0.1f-1ubuntu2.7
1.0.1f-1ubuntu2.8
1.0.1f-1ubuntu2.11
1.0.1f-1ubuntu2.12

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.0.1f-1ubuntu2.15",
            "binary_name": "libcrypto1.0.0-udeb"
        },
        {
            "binary_version": "1.0.1f-1ubuntu2.15",
            "binary_name": "libcrypto1.0.0-udeb-dbgsym"
        },
        {
            "binary_version": "1.0.1f-1ubuntu2.15",
            "binary_name": "libssl-dev"
        },
        {
            "binary_version": "1.0.1f-1ubuntu2.15",
            "binary_name": "libssl-dev-dbgsym"
        },
        {
            "binary_version": "1.0.1f-1ubuntu2.15",
            "binary_name": "libssl-doc"
        },
        {
            "binary_version": "1.0.1f-1ubuntu2.15",
            "binary_name": "libssl1.0.0"
        },
        {
            "binary_version": "1.0.1f-1ubuntu2.15",
            "binary_name": "libssl1.0.0-dbg"
        },
        {
            "binary_version": "1.0.1f-1ubuntu2.15",
            "binary_name": "libssl1.0.0-dbgsym"
        },
        {
            "binary_version": "1.0.1f-1ubuntu2.15",
            "binary_name": "libssl1.0.0-udeb"
        },
        {
            "binary_version": "1.0.1f-1ubuntu2.15",
            "binary_name": "libssl1.0.0-udeb-dbgsym"
        },
        {
            "binary_version": "1.0.1f-1ubuntu2.15",
            "binary_name": "openssl"
        },
        {
            "binary_version": "1.0.1f-1ubuntu2.15",
            "binary_name": "openssl-dbgsym"
        }
    ],
    "availability": "No subscription required"
}