VULNERABILITY INTELLIGENCE
CVE-2006-4434
CVSS score7.5 HIGH
EPSS probability4.55%
CISA KEVNot currently listed
Published2006-08-29
Last modified2026-06-16
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Description
Use-after-free vulnerability in Sendmail before 8.13.8 allows remote attackers to cause a denial of service (crash) via a long "header line", which causes a previously freed variable to be referenced. NOTE: the original developer has disputed the severity of this issue, saying "The only denial of service that is possible here is to fill up the disk with core dumps if the OS actually generates different core dumps (which is unlikely)... the bug is in the shutdown code (finis()) which leads directly to exit(3), i.e., the process would terminate anyway, no mail delivery or receiption is affected."
Weakness classification
- nvd@nist.gov: CWE-416
Primary references
- cve@mitre.org — Broken Link, Patch, Vendor Advisory
- cve@mitre.org — Broken Link, Patch, Vendor Advisory
- cve@mitre.org — Broken Link, Vendor Advisory
- cve@mitre.org — Broken Link, Vendor Advisory
- cve@mitre.org — Broken Link, Vendor Advisory
- cve@mitre.org — Broken Link, Vendor Advisory
- cve@mitre.org — Broken Link, Patch, Third Party Advisory, VDB Entry
- cve@mitre.org — Broken Link
- cve@mitre.org — Mailing List
- cve@mitre.org — Broken Link
- cve@mitre.org — Broken Link
- cve@mitre.org — Broken Link