CVE-2010-1938

Severity: critical (CVSS 9.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 21.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2010-05-28 · updated 2026-06-16
Weakness: CWE-189

Description

Off-by-one error in the __opiereadrec function in readrec.c in libopie in OPIE 2.4.1-test1 and earlier, as used on FreeBSD 6.4 through 8.1-PRERELEASE and other platforms, allows remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code via a long username, as demonstrated by a long USER command to the FreeBSD 8.0 ftpd.

Affected products

FreeBSD: 6-stable, 6.4, 6.4-release, 6.4-release_p2, 6.4-release_p3, 6.4-release_p4 (+28)
Nrl Opie: through 2.4.1; 2.2, 2.3, 2.4, 2.10, 2.11, 2.21 (+2)

References

http://blog.pi3.com.pl/?p=111
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=584932
http://secunia.com/advisories/39963
http://secunia.com/advisories/39966
http://secunia.com/advisories/45136
http://security.FreeBSD.org/advisories/FreeBSD-SA-10:05.opie.asc
http://securityreason.com/achievement_securityalert/87
http://securityreason.com/securityalert/7450
http://securitytracker.com/id?1024040
http://securitytracker.com/id?1025709
http://site.pi3.com.pl/adv/libopie-adv.txt
http://www.debian.org/security/2011/dsa-2281

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