CVE-2006-4434
sendmail - programming error
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."
How to fix CVE-2006-4434
To remediate CVE-2006-4434, upgrade the affected package to a fixed version below.
- —upgrade to 8.13.8-1 or later
- —upgrade to 8.13.4-3sarge3 or later
Is CVE-2006-4434 being exploited?
Moderate — EPSS is 7.0%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (2)
- from 0, < 8.13.8-1
- from 0, < 8.13.4-3sarge3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |