Home/CVE/In Sendmail, attackers can gain root privileges via SMTP by specifying an improper "mail from" address and an invalid "r
CVE

CVE-1999-0203

In Sendmail, attackers can gain root privileges via SMTP by specifying an improper "mail from" address and an invalid "r

In Sendmail, attackers can gain root privileges via SMTP by specifying an improper "mail from" address and an invalid "rcpt to" address that would cause the mail to bounce to a program.

HIGH · CVSS 10 EPSS 0.00483
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
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Affected Products & Versions

1
eric allman sendmailall versions
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Detection Rules (IDS/IPS)

3
snort-communitySERVER-MAIL Sendmail 5.5.5 exploitattempted-admin
snort-communitySERVER-MAIL Sendmail RCPT TO decode attemptattempted-admin
snort-communitySERVER-MAIL Sendmail 5.6.5 exploitattempted-user
Open rulesets (ET Open, Snort Community, abuse.ch) link to source. Commercial rulesets are reference-only.
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Scoring & Timeline

10
HIGH · CVSS v2 (legacy) · cve@mitre.org
View on NVD
This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.
v2 Vector
AV:N/AC:L/Au:N/C:C/I:C/A:C
Published to NVD17 Aug 1995 · 04:00 AM
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References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0203
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