Vulnerability CVE-2010-1938
Published: 2010-05-28   Modified: 2012-02-13

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.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
libopie __readrec() off-by one (FreeBSD ftpd remote PoC)
Maksymilian Arci...
27.05.2010
High
FreeBSD 8.0 ftpd off-by one PoC (FreeBSD-SA-10:05)
Maksymilian Arci...
27.05.2010

Type:

CWE-189

 (Numeric Errors)

CVSS2 => (AV:N/AC:M/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
9.3/10
10/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
NRL -> OPIE 
Freebsd -> Freebsd 

 References:
http://www.securityfocus.com/bid/40403
http://www.exploit-db.com/exploits/12762
http://www.debian.org/security/2011/dsa-2281
http://site.pi3.com.pl/adv/libopie-adv.txt
http://securitytracker.com/id?1025709
http://securitytracker.com/id?1024040
http://securityreason.com/securityalert/7450
http://securityreason.com/achievement_securityalert/87
http://security.FreeBSD.org/advisories/FreeBSD-SA-10:05.opie.asc
http://secunia.com/advisories/45136
http://secunia.com/advisories/39966
http://secunia.com/advisories/39963
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=584932
http://blog.pi3.com.pl/?p=111
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