Signal handler race condition in Sendmail 8.13.x before 8.13.6 allows remote attackers to…
Priority MEDIUM 56Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- Complete · Complete · Complete
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
Summary
Signal handler race condition in Sendmail 8.13.x before 8.13.6 allows remote attackers to execute arbitrary code by triggering timeouts in a way that causes the setjmp and longjmp function calls to be interrupted and modify unexpected memory locations.
Why it matters now
EPSS 0.28735 98th percentileScored 2026-11-07
Fix Fixed Red Hat: 2 advisories
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:sendmail:sendmail:8.13.0:*:*:*:*:*:*:* | 8.13.0 | Vulnerable | Sendmail |
| cpe:2.3:a:sendmail:sendmail:8.13.1:*:*:*:*:*:*:* | 8.13.1 | Vulnerable | Sendmail |
| cpe:2.3:a:sendmail:sendmail:8.13.2:*:*:*:*:*:*:* | 8.13.2 | Vulnerable | Sendmail |
| cpe:2.3:a:sendmail:sendmail:8.13.3:*:*:*:*:*:*:* | 8.13.3 | Vulnerable | Sendmail |
| cpe:2.3:a:sendmail:sendmail:8.13.4:*:*:*:*:*:*:* | 8.13.4 | Vulnerable | Sendmail |
| cpe:2.3:a:sendmail:sendmail:8.13.5:*:*:*:*:*:*:* | 8.13.5 | Vulnerable | Sendmail |
- cpe:2.3:a:sendmail:sendmail:8.13.0:*:*:*:*:*:*:* Versions 8.13.0 Vulnerable ·Sendmail
- cpe:2.3:a:sendmail:sendmail:8.13.1:*:*:*:*:*:*:* Versions 8.13.1 Vulnerable ·Sendmail
- cpe:2.3:a:sendmail:sendmail:8.13.2:*:*:*:*:*:*:* Versions 8.13.2 Vulnerable ·Sendmail
- cpe:2.3:a:sendmail:sendmail:8.13.3:*:*:*:*:*:*:* Versions 8.13.3 Vulnerable ·Sendmail
- cpe:2.3:a:sendmail:sendmail:8.13.4:*:*:*:*:*:*:* Versions 8.13.4 Vulnerable ·Sendmail
- cpe:2.3:a:sendmail:sendmail:8.13.5:*:*:*:*:*:*:* Versions 8.13.5 Vulnerable ·Sendmail
Remediation
Red Hat 2 advisories
- RHSA-2006:0264 Released 2006-03-22 · Red Hat rating Criticalsendmail security update
- Red Hat Desktop version 3 sendmail-8.12.11-4.RHEL3.4, sendmail-8.12.11-4.RHEL3.4.i386, sendmail-cf-8.12.11-4.RHEL3.4 +5
- Red Hat Enterprise Linux AS version 3 sendmail-8.12.11-4.RHEL3.4, sendmail-8.12.11-4.RHEL3.4.i386, sendmail-8.12.11-4.RHEL3.4.ia64 +13
- Red Hat Enterprise Linux AS version 4 sendmail-8.13.1-3.RHEL4.3, sendmail-8.13.1-3.RHEL4.3.i386, sendmail-8.13.1-3.RHEL4.3.ia64 +13
- Red Hat Enterprise Linux Desktop version 4 sendmail-8.13.1-3.RHEL4.3, sendmail-8.13.1-3.RHEL4.3.i386, sendmail-cf-8.13.1-3.RHEL4.3 +5
- Red Hat Enterprise Linux ES version 3 sendmail-8.12.11-4.RHEL3.4, sendmail-8.12.11-4.RHEL3.4.i386, sendmail-8.12.11-4.RHEL3.4.ia64 +9
- Red Hat Enterprise Linux ES version 4 sendmail-8.13.1-3.RHEL4.3, sendmail-8.13.1-3.RHEL4.3.i386, sendmail-8.13.1-3.RHEL4.3.ia64 +9
- Red Hat Enterprise Linux WS version 3 sendmail-8.12.11-4.RHEL3.4, sendmail-8.12.11-4.RHEL3.4.i386, sendmail-8.12.11-4.RHEL3.4.ia64 +9
- Red Hat Enterprise Linux WS version 4 sendmail-8.13.1-3.RHEL4.3, sendmail-8.13.1-3.RHEL4.3.i386, sendmail-8.13.1-3.RHEL4.3.ia64 +9
- RHSA-2006:0265 Released 2006-03-22 · Red Hat rating Criticalsendmail security update
- Red Hat Enterprise Linux AS (Advanced Server) version 2.1
- Red Hat Enterprise Linux ES version 2.1
- Red Hat Enterprise Linux WS version 2.1
- Red Hat Linux Advanced Workstation 2.1
Vendor assessments
Red Hat
Red Hat rating: Critical. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Desktop version 3 | Fixed | RHSA-2006:0264 |
| Red Hat Enterprise Linux AS (Advanced Server) version 2.1 | Fixed | RHSA-2006:0265 |
| Red Hat Enterprise Linux AS version 3 | Fixed | RHSA-2006:0264 |
| Red Hat Enterprise Linux AS version 4 | Fixed | RHSA-2006:0264 |
| Red Hat Enterprise Linux Desktop version 4 | Fixed | RHSA-2006:0264 |
| Red Hat Enterprise Linux ES version 2.1 | Fixed | RHSA-2006:0265 |
| Red Hat Enterprise Linux ES version 3 | Fixed | RHSA-2006:0264 |
| Red Hat Enterprise Linux ES version 4 | Fixed | RHSA-2006:0264 |
| Red Hat Enterprise Linux WS version 2.1 | Fixed | RHSA-2006:0265 |
| Red Hat Enterprise Linux WS version 3 | Fixed | RHSA-2006:0264 |
| Red Hat Enterprise Linux WS version 4 | Fixed | RHSA-2006:0264 |
| Red Hat Linux Advanced Workstation 2.1 | Fixed | RHSA-2006:0265 |
Timeline
- 2026-10-02 Threatist record created from CVE-2006-0058
- 2026-10-03 Alias added: GHSA-rwqm-33xf-cwgq
References
Patch 2
Advisory 23
Other 18
- ADV-2006-1529
- http://www14.software.ibm.com/webapp/set2/sas/f/hmc/power5/install/v52.Readme.html#MH00688
- ADV-2006-1049
- oval:org.mitre.oval:def:11074
- ADV-2006-1051
- http://www.f-secure.com/security/fsc-2006-2.shtml
- ADV-2006-2189
- http://support.avaya.com/elmodocs2/security/ASA-2006-078.htm
- http://support.avaya.com/elmodocs2/security/ASA-2006-074.htm
- http://www14.software.ibm.com/webapp/set2/subscriptions/pqvcmjd?mode=18&ID=2751
- ADV-2006-1068
- ADV-2006-2490
- ADV-2006-1072
- 24037
- ADV-2006-1139
- ADV-2006-1157
- oval:org.mitre.oval:def:1689
- http://www.sendmail.com/company/advisory/index.shtml
More Sendmail vulnerabilities
- TI-2002-01263 Buffer overflow in Sendmail 5.79 to 8.12.7 allows remote attackers to execute arbitrary… CVSS 2.0HIGH 10.0
- TI-2003-00642 The prescan function in Sendmail 8.12.9 allows remote attackers to execute arbitrary code… CVSS 2.0HIGH 10.0
- TI-2003-00154 The prescan() function in the address parser (parseaddr.c) in Sendmail before 8.12.9 does… CVSS 2.0HIGH 10.0
- TI-2003-00632 A "potential buffer overflow in ruleset parsing" for Sendmail 8.12.9, when using the… CVSS 2.0HIGH 7.5
- TI-2006-04282 Use-after-free vulnerability in Sendmail before 8.13.8 allows remote attackers to cause a… CVSS 3.1HIGH 7.5
- TI-2002-00879 Buffer overflow in Sendmail before 8.12.5, when configured to use a custom DNS map to… CVSS 2.0HIGH 7.5
Sources
- CVE-2006-0058 · CVE Program
- CVE-2006-0058 · NVD
- FIRST EPSS
- GHSA-rwqm-33xf-cwgq · GitHub Advisory Database · CC BY 4.0
- CVE-2006-0058 · Red Hat security data · CC BY 4.0
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