CVE-2001-0323

Severity: medium (CVSS 6.4 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2001-06-02 · updated 2026-06-16

Description

The ICMP path MTU (PMTU) discovery feature in various UNIX systems allows remote attackers to cause a denial of service by spoofing "ICMP Fragmentation needed but Don't Fragment (DF) set" packets between two target hosts, which could cause one host to lower its MTU when transmitting to the other host.

References

http://marc.info/?l=bugtraq&m=97958349623450&w=2
http://www.mandriva.com/security/advisories?name=MDVSA-2013:150
http://www.oracle.com/technetwork/topics/security/cpujul2012-392727.html
https://exchange.xforce.ibmcloud.com/vulnerabilities/5975
http://marc.info/?l=bugtraq&m=97958349623450&w=2
http://www.mandriva.com/security/advisories?name=MDVSA-2013:150
http://www.oracle.com/technetwork/topics/security/cpujul2012-392727.html
https://exchange.xforce.ibmcloud.com/vulnerabilities/5975

Get alerted when CVE-2001-0323 or the next vulnerability affects your stack