CVE-2002-1347

Multiple buffer overflows in Cyrus SASL library 2.1.9 and earlier allow remote attackers to cause a denial of service and possibly execute arbitrary code via (1) long inputs during user name canonicalization, (2) characters that need to be escaped during LDAP authentication using saslauthd, or (3) an off-by-one error in the log writer, which does not allocate space for the null character that terminates a string.

Published: 2002-12-18 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2002-1347 is rated High Risk (69/100): CVSS Critical severity, with high exploitation likelihood (EPSS 7.08%, 93th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2002-1347

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 9.98% 7.08% -2.90%
2 2025-03-30 15.32% 9.98% -5.34%
3 2025-03-29 — 15.32% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2002-1347

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2002-1347

OS Trackers for CVE-2002-1347

vendor priority summary link
debian not yet assigned CVE-2002-1347 not yet assigned priority: Debian including 1 source packages (cyrus-sasl2), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2002-1347
redhat — — https://access.redhat.com/security/cve/CVE-2002-1347

Affected software / configurations for CVE-2002-1347

Vendor Product Version Raw CPE
cyrusimap cyrus_sasl <= 2.1.9 cpe:2.3:a:cyrusimap:cyrus_sasl:*:*:*:*:*:*:*:*
apple mac_os_x < 10.3.8 cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
apple mac_os_x_server < 10.3.8 cpe:2.3:o:apple:mac_os_x_server:*:*:*:*:*:*:*:*

References for CVE-2002-1347

URL Tags
http://archives.neohapsis.com/archives/linux/suse/2002-q4/1275.html Broken Link
http://distro.conectiva.com/atualizacoes/?id=a&anuncio=000557 Broken Link
http://lists.apple.com/archives/security-announce/2005/Mar/msg00000.html Mailing List
http://marc.info/?l=bugtraq&m=103946297703402&w=2 Mailing List Patch
http://www.debian.org/security/2002/dsa-215 Broken Link
http://www.redhat.com/support/errata/RHSA-2002-283.html Broken Link
http://www.securityfocus.com/advisories/4826 Broken Link Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/6347 Broken Link Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/6348 Broken Link Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/6349 Broken Link Third Party Advisory VDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/10810 Third Party Advisory VDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/10811 Third Party Advisory VDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/10812 Third Party Advisory VDB Entry
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