MEDIUM
CVE-2002-2443
CWE-20Published: May 29, 2013· Updated: Jun 16, 2026
5.0
CVSS v3.1
Official Description
schpw.c in the kpasswd service in kadmind in MIT Kerberos 5 (aka krb5) before 1.11.3 does not properly validate UDP packets before sending responses, which allows remote attackers to cause a denial of service (CPU and bandwidth consumption) via a forged packet that triggers a communication loop, as demonstrated by krb_pingpong.nasl, a related issue to CVE-1999-0103.
Technical Analysis
CVE-2002-2443 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityNone
IntegrityNone
AvailabilityP
AV:N/AC:L/Au:N/C:N/I:N/A:P
Affected Vendors & Products
Canonical1 product(s)
ubuntu linux
Debian1 product(s)
debian linux
Fedora1 product(s)
fedora
mit1 product(s)
kerberos 5
openSUSE1 product(s)
opensuse
Red Hat5 product(s)
enterprise linux desktopenterprise linux eusenterprise linux serverenterprise linux server ausenterprise linux workstation
Source: NVD CPE · 23 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (24)
→
http://krbdev.mit.edu/rt/Ticket/Display.html?id=7637Vendor Advisory
→
http://lists.fedoraproject.org/pipermail/package-announce/2013-May/105879.htmlThird Party Advisory
→
http://lists.fedoraproject.org/pipermail/package-announce/2013-May/105978.htmlThird Party Advisory
→
http://lists.fedoraproject.org/pipermail/package-announce/2013-May/106698.htmlThird Party Advisory
→
http://lists.opensuse.org/opensuse-updates/2013-07/msg00004.htmlMailing List · Third Party Advisory
→
http://lists.opensuse.org/opensuse-updates/2013-07/msg00007.htmlMailing List · Third Party Advisory
→
http://rhn.redhat.com/errata/RHSA-2013-0942.htmlThird Party Advisory
→
http://www.debian.org/security/2013/dsa-2701Third Party Advisory
→
http://www.mandriva.com/security/advisories?name=MDVSA-2013:166Third Party Advisory
→
http://www.ubuntu.com/usn/USN-2810-1Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=962531Issue Tracking · Third Party Advisory
→
https://github.com/krb5/krb5/commit/cf1a0c411b2668c57c41e9c4efd15ba17b6b322cPatch · Third Party Advisory
→
http://krbdev.mit.edu/rt/Ticket/Display.html?id=7637Vendor Advisory
→
http://lists.fedoraproject.org/pipermail/package-announce/2013-May/105879.htmlThird Party Advisory
→
http://lists.fedoraproject.org/pipermail/package-announce/2013-May/105978.htmlThird Party Advisory
Quick Facts
CVE IDCVE-2002-2443
CVSS Score5.0 / 10
SeverityMEDIUM
WeaknessCWE-20
CISA KEVNo
Affected6 vendor(s)
PublishedMay 29, 2013
Related CVEs (CWE-20)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2002-2443 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.