libksba: integer underflow flaw leading to a heap-based buffer overflow in ksba_oid_to_str()
Published Dec 1, 2014
7.5
HIGHCVSS 2.0
EPSS 5.66%
Description
Integer underflow in the ksba_oid_to_str function in Libksba before 1.3.2, as used in GnuPG, allows remote attackers to cause a denial of service (crash) via a crafted OID in a (1) S/MIME message or (2) ECC based OpenPGP data, which triggers a buffer overflow.
Affected products
No data.
Configuration 2
- 7.0
- 8.0
Configuration 4
- 12.04
- 14.04
- 14.10
No data.
Red Hat Enterprise Linux 5
libksba
Will not fix
Red Hat Enterprise Linux 6
libksba
Will not fix
Red Hat Enterprise Linux 7
libksba
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | libksba | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | libksba | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | libksba | Will not fix | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (20 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 5.66% (0.05661) | 92.74th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.17% (0.05167) | 91.34th | v5 (v2026.06.15) |
| May 13, 2026 | 4.48% (0.04481) | 89.20th | v4 (v2025.03.14) |
| Jan 9, 2026 | 6.16% (0.06155) | 90.53th | v4 (v2025.03.14) |
| Dec 28, 2025 | 7.75% (0.07754) | 91.64th | v4 (v2025.03.14) |
| Dec 27, 2025 | 5.05% (0.05055) | 89.47th | v4 (v2025.03.14) |
| Oct 28, 2025 | 7.75% (0.07754) | 91.54th | v4 (v2025.03.14) |
| Oct 27, 2025 | 5.05% (0.05055) | 89.31th | v4 (v2025.03.14) |
| Oct 1, 2025 | 7.75% (0.07754) | 91.64th | v4 (v2025.03.14) |
| Jul 20, 2025 | 5.05% (0.05055) | 89.30th | v4 (v2025.03.14) |
| Mar 30, 2025 | 3.98% (0.03981) | 87.32th | v4 (v2025.03.14) |
| Mar 29, 2025 | 5.96% (0.05964) | 84.00th | v4 (v2025.03.14) |
| Mar 17, 2025 | 3.98% (0.03981) | 87.63th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.42% (0.01422) | 87.05th | v3 (v2023.03.01) |
| Jul 13, 2024 | 1.42% (0.01422) | 86.64th | v3 (v2023.03.01) |
| May 27, 2024 | 1.67% (0.01673) | 87.64th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.66% (0.01662) | 85.64th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02172) | 80.77th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.17% (0.02172) | 78.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.17% (0.02172) | 57.73th | v2 (v2022.01.01) |
References (15)
- http://advisories.mageia.org/MGASA-2014-0498.html x_refsource_CONFIRMThird Party Advisory
- http://lists.gnupg.org/pipermail/gnupg-announce/2014q4/000359.html mailing-listx_refsource_MLISTMailing ListVendor Advisory
- http://secunia.com/advisories/60073 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://secunia.com/advisories/60189 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://secunia.com/advisories/60233 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://www.debian.org/security/2014/dsa-3078 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.mandriva.com/security/advisories?name=MDVSA-2014:234 vendor-advisoryx_refsource_MANDRIVANot Applicable
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:151 vendor-advisoryx_refsource_MANDRIVANot Applicable
- http://www.securityfocus.com/bid/71285 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.ubuntu.com/usn/USN-2427-1 vendor-advisoryx_refsource_UBUNTUPatchThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2014-9087 Vendor Advisory
- https://blog.fuzzing-project.org/2-Buffer-overflow-and-other-minor-issues-in-GnuPG-and-libksba-TFPA-0012014.html x_refsource_MISCThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1168051 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2014-9087
- https://www.cve.org/CVERecord?id=CVE-2014-9087
Change history (0)
No recorded changes yet.