Buffer overflow in Sendmail 5.79 to 8.12.7 allows remote attackers to execute arbitrary code via certain formatted address fields, related t

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• gentoo linux1.4
• hp alphaserver scall versions
• hp hp-ux10.10
• hp hp-ux10.20
• hp hp-ux11.0.4
• hp hp-ux11.00
• hp hp-ux11.11
• hp hp-ux11.22
• netbsd netbsd1.5
• netbsd netbsd1.5.1
• netbsd netbsd1.5.2
• netbsd netbsd1.5.3
• netbsd netbsd1.6
• oracle solaris2.6
• oracle solaris7.0
• oracle solaris8
• oracle solaris9
• sendmail sendmailbefore 8.9.3
• sendmail sendmail8.10.0 and later · before 8.11.6
• sendmail sendmail8.12.0 and later · before 8.12.8

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Other highest-scoring records for the same primary product.

• CVE-2003-0161The prescan() function in the address parser (parseaddr.c) in Sendmail before 8.12.9 does not properly handle certain conversions from char
  52Plan
• CVE-2006-0058Signal handler race condition in Sendmail 8.13.x before 8.13.6 allows remote attackers to execute arbitrary code by triggering timeouts in a
  39Monitor
• CVE-2009-4565sendmail before 8.14.4 does not properly handle a '\0' character in a Common Name (CN) field of an X.509 certificate, which (1) allows man-i
  31Monitor
• CVE-2006-4434Use-after-free vulnerability in Sendmail before 8.13.8 allows remote attackers to cause a denial of service (crash) via a long "header line"
  31Monitor
• CVE-2002-2261Sendmail 8.9.0 through 8.12.6 allows remote attackers to bypass relaying restrictions enforced by the 'check_relay' function by spoofing a b
  31Monitor
• CVE-2002-0906Buffer overflow in Sendmail before 8.12.5, when configured to use a custom DNS map to query TXT records, allows remote attackers to cause a
  31Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

When data is copied, the source length is not compared with the size of the destination buffer. Excess data overwrites adjacent memory.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1char buf[256];2memcpy(buf, pkt->data, pkt->len);

1char buf[256];2if (pkt->len > sizeof(buf)) {3  return -EINVAL;4}5memcpy(buf, pkt->data, pkt->len);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.