wireshark: NULL pointer dereference in ANSI A dissector
Published Apr 11, 2012
3.3
LOWCVSS 2.0
EPSS 11.17%
Description
epan/dissectors/packet-ansi_a.c in the ANSI A dissector in Wireshark 1.4.x before 1.4.12 and 1.6.x before 1.6.6 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a malformed packet.
Affected products
No data.
- 1.4.0
- 1.4.1
- 1.4.2
- 1.4.3
- 1.4.4
- 1.4.5
- 1.4.6
- 1.4.7
- 1.4.8
- 1.4.9
- 1.4.10
- 1.4.11
No data.
Red Hat Enterprise Linux 5
wireshark
Not affected
Red Hat Enterprise Linux 6
wireshark
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | wireshark | Not affected | n/a |
| Red Hat Enterprise Linux 6 | wireshark | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not Vulnerable. This issue does not affect the version of wireshark as shipped with Red Hat Enterprise Linux 5 and 6.
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:A/AC:L/Au:N/C:N/I:N/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 (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 11.17% (0.11166) | 95.83th | v5 (v2026.06.15) |
| Jun 15, 2026 | 11.29% (0.11290) | 95.40th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.77% (0.01771) | 81.42th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.46% (0.01462) | 87.26th | v3 (v2023.03.01) |
| Nov 10, 2023 | 1.46% (0.01462) | 85.23th | v3 (v2023.03.01) |
| Jul 6, 2023 | 1.53% (0.01529) | 85.25th | v3 (v2023.03.01) |
| May 6, 2023 | 1.45% (0.01453) | 84.67th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.00% (0.01002) | 81.31th | v3 (v2023.03.01) |
| Mar 6, 2023 | 12.57% (0.12567) | 95.52th | v2 (v2022.01.01) |
| Jun 26, 2022 | 12.57% (0.12567) | 95.27th | v2 (v2022.01.01) |
| Apr 1, 2022 | 12.96% (0.12955) | 95.26th | v2 (v2022.01.01) |
| Mar 25, 2022 | 12.96% (0.12955) | 90.39th | v2 (v2022.01.01) |
| Feb 4, 2022 | 13.39% (0.13394) | 90.60th | v2 (v2022.01.01) |
References (17)
- http://anonsvn.wireshark.org/viewvc?view=revision&revision=40962 x_refsource_CONFIRM
- http://lists.fedoraproject.org/pipermail/package-announce/2012-April/078769.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2012-April/078770.html vendor-advisoryx_refsource_FEDORA
- http://lists.opensuse.org/opensuse-updates/2012-04/msg00060.html vendor-advisoryx_refsource_SUSE
- http://secunia.com/advisories/48548 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/48986 third-party-advisoryx_refsource_SECUNIA
- http://www.exploit-db.com/exploits/18758 exploitx_refsource_EXPLOIT-DB
- http://www.openwall.com/lists/oss-security/2012/03/28/13 mailing-listx_refsource_MLIST
- http://www.securitytracker.com/id?1026874 vdb-entryx_refsource_SECTRACK
- http://www.wireshark.org/security/wnpa-sec-2012-04.html x_refsource_CONFIRMVendor Advisory
- https://access.redhat.com/security/cve/CVE-2012-1593 Vendor Advisory
- https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=6823 x_refsource_CONFIRM
- https://bugzilla.redhat.com/show_bug.cgi?id=807611 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/74361 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2012-1593
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14991 vdb-entrysignaturex_refsource_OVAL
- https://www.cve.org/CVERecord?id=CVE-2012-1593
Change history (0)
No recorded changes yet.