digestmd5.c in the CMU Cyrus Simple Authentication and Security Layer (SASL) library 2.1.18, and possibly other versions before 2.1.21,…

Description

digestmd5.c in the CMU Cyrus Simple Authentication and Security Layer (SASL) library 2.1.18, and possibly other versions before 2.1.21, allows remote unauthenticated attackers to cause a denial of service (segmentation fault) via malformed inputs in DIGEST-MD5 negotiation.

Scores

EPSS (exploitation in 30 days)

2.5% · top 15% of all CVEs (7 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 2.6.

Weakness

• n/a
• CWE-20 (opens in a new tab)All about CWE-20 and its CVEs

Affected products

• n/a

  • affected n/a

References (33)

• 26708 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• ADV-2008-1744 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• 19825 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://asg.web.cmu.edu/archive/message.php?mailbox=archive.cyrus-sasl&msg=7775 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 19809 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 19618 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 19753 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• oval:org.mitre.oval:def:9861 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• cyrus-sasl-digest-dos(25738) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
• http://support.avaya.com/elmodocs2/security/ASA-2007-426.htm (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://labs.musecurity.com/advisories/MU-200604-01.txt (opens in a new tab)x_refsource_MISCx_transferred
• 26857 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://www.vmware.com/security/advisories/VMSA-2008-0009.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• 20060410 [MU-200604-01] Cyrus SASL DIGEST-MD5 Pre-Authentication Denial of Service (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
• 22187 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• MDKSA-2006:073 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
• ADV-2006-3852 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• 27237 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• RHSA-2007:0878 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• RHSA-2007:0795 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• 20014 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• APPLE-SA-2006-09-29 (opens in a new tab)vendor-advisoryx_refsource_APPLEx_transferred
• 30535 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 17446 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• 19964 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 20080604 VMSA-2008-0009 Updates to VMware Workstation, VMware Player, VMware ACE, VMware Fusion, VMware Server, VMware VIX API, VMware ESX, VMware ESXi resolve critical security issues (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
• 2006-0024 (opens in a new tab)vendor-advisoryx_refsource_TRUSTIXx_transferred
• USN-272-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• SUSE-SA:2006:025 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• 1016960 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
• GLSA-200604-09 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
• ADV-2006-1306 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• DSA-1042 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2006-1721](https://trackcve.app/badge/CVE-2006-1721.svg)](https://trackcve.app/cve/CVE-2006-1721)

Record last updated 7 Aug 2024, 17:19 UTC.