sshd in OpenSSH before 4.4, when using the version 1 SSH protocol, allows remote attackers to cause a denial of service (CPU consumption)…

Description

sshd in OpenSSH before 4.4, when using the version 1 SSH protocol, allows remote attackers to cause a denial of service (CPU consumption) via an SSH packet that contains duplicate blocks, which is not properly handled by the CRC compensation attack detector.

Scores

EPSS (exploitation in 30 days)

38.1% · top 1.4% of all CVEs (5 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.

Weakness

• n/a
• CWE-399 (opens in a new tab)All about CWE-399 and its CVEs

Affected products

• n/a

  • affected n/a

References (76)

• FreeBSD-SA-06:22 (opens in a new tab)vendor-advisoryx_refsource_FREEBSDx_transferred
• http://sourceforge.net/forum/forum.php?forum_id=681763 (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://blogs.sun.com/security/entry/sun_alert_102962_security_vulnerability (opens in a new tab)x_refsource_CONFIRMx_transferred
• 22270 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• HPSBUX02178 (opens in a new tab)vendor-advisoryx_refsource_HPx_transferred
• 23038 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• USN-355-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• 2006-0054 (opens in a new tab)vendor-advisoryx_refsource_TRUSTIXx_transferred
• http://www.vmware.com/support/vi3/doc/esx-3069097-patch.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• ADV-2006-4401 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• http://sourceforge.net/project/shownotes.php?release_id=461863&group_id=69227 (opens in a new tab)x_refsource_CONFIRMx_transferred
• ADV-2009-0740 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• 22116 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 21923 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 24805 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 23340 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• [2.9] 015: SECURITY FIX: October 12, 2006 (opens in a new tab)vendor-advisoryx_refsource_OPENBSDx_transferred
• SUSE-SR:2006:024 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• 22487 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• TA07-072A (opens in a new tab)third-party-advisoryx_refsource_CERTx_transferred
• GLSA-200611-06 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
• http://support.avaya.com/elmodocs2/security/ASA-2006-262.htm (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://bugs.gentoo.org/show_bug.cgi?id=148228 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 22164 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 102962 (opens in a new tab)vendor-advisoryx_refsource_SUNALERTx_transferred
• SUSE-SA:2006:062 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• 22362 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 23680 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• APPLE-SA-2007-03-13 (opens in a new tab)vendor-advisoryx_refsource_APPLEx_transferred
• 34274 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• VU#787448 (opens in a new tab)third-party-advisoryx_refsource_CERT-VNx_transferred
• http://docs.info.apple.com/article.html?artnum=305214 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 1016931 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
• ADV-2006-4869 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• 22298 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 22352 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 22236 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• oval:org.mitre.oval:def:1193 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• 24799 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=207955 (opens in a new tab)x_refsource_MISCx_transferred
• 22091 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 22495 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• ADV-2007-1332 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• 20216 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• 20060927 rPSA-2006-0174-1 gnome-ssh-askpass openssh openssh-client openssh-server (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
• GLSA-200609-17 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
• 22823 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• SSA:2006-272-02 (opens in a new tab)vendor-advisoryx_refsource_SLACKWAREx_transferred
• RHSA-2006:0697 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• https://hypersonic.bluecoat.com/support/securityadvisories/ssh_server_on_sg (opens in a new tab)x_refsource_CONFIRMx_transferred
• ADV-2006-3777 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• OpenPKG-SA-2006.022 (opens in a new tab)vendor-advisoryx_refsource_OPENPKGx_transferred
• 22183 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• openssh-block-dos(29158) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
• [openssh-unix-dev] 20060927 Announce: OpenSSH 4.4 released (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• 23241 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• ADV-2007-2119 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• ADV-2007-0930 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
• [security-announce] 20070409 Globus Security Advisory 2007-02: GSI-OpenSSH vulnerability (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• 22926 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 29371 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 22208 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://www.vmware.com/support/vi3/doc/esx-9986131-patch.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• 22245 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• https://issues.rpath.com/browse/RPL-661 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 22196 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• DSA-1212 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• oval:org.mitre.oval:def:10462 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• RHSA-2006:0698 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• 29152 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
• 25608 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 22158 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• MDKSA-2006:179 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
• DSA-1189 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• http://support.avaya.com/elmodocs2/security/ASA-2006-216.htm (opens in a new tab)x_refsource_CONFIRMx_transferred
• 24479 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_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-2006-4924](https://trackcve.app/badge/CVE-2006-4924.svg)](https://trackcve.app/cve/CVE-2006-4924)

Record last updated 7 Aug 2024, 19:32 UTC.