Home/CVE/cyrus-sasl (aka Cyrus SASL) 2.1.27 has an out-of-bounds write leading to unauthenticated remote denial-of-service in Ope
CVE

CVE-2019-19906

cyrus-sasl (aka Cyrus SASL) 2.1.27 has an out-of-bounds write leading to unauthenticated remote denial-of-service in Ope

cyrus-sasl (aka Cyrus SASL) 2.1.27 has an out-of-bounds write leading to unauthenticated remote denial-of-service in OpenLDAP via a malformed LDAP packet. The OpenLDAP crash is ultimately caused by an off-by-one error in _sasl_add_string in common.c in cyrus-sasl.

HIGH · CVSS 7.5 EPSS 0.00481
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-193Off-by-one Error
CWE-787Out-of-bounds Write
▤

Affected Products & Versions

22
cyrusimap cyrus-sasl< 2.1.28
debian linuxall versions
canonical ubuntu linuxall versions
fedoraproject fedoraall versions
redhat jboss enterprise web serverall versions
apple mac os xall versions
redhat enterprise linuxall versions
redhat enterprise linux eusall versions
⚠

Public Exploits & PoCs

1
pocwww.openldap.org · Incoming?id=9123www.openldap.org
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD19 Dec 2019 · 06:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

9
suse-csafopenSUSE-SU-2024:10709-1
siemens-csafSSA-398330
suse-csafSUSE-SU-2022:3549-1
suse-csafSUSE-SU-2020:3939-1
suse-csafSUSE-SU-2020:14579-1
🔗

References & Sources

14
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://seclists.org/fulldisclosure/2020/Jul/23Mailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2020/Jul/24Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2022/02/23/4Mailing ListPatchRelease NotesThird Party Advisory
https://github.com/cyrusimap/cyrus-sasl/issues/587PatchThird Party Advisory
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
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