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CVE-2021-26690 Details

Description

Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted Cookie header handled by mod_session can cause a NULL pointer dereference and crash, leading to a possible Denial Of Service

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
http://httpd.apache.org/security/vulnerabilities_24.html	CVE	Release NotesVendor Advisory
https://lists.apache.org/thread.html/r7f2b70b621651548f4b6f027552f1dd91705d7111bb5d15cda0a68dd%40%3Cdev.httpd.apache.org%3E	CVE
https://lists.apache.org/thread.html/rae406c1d19c0dfd3103c96923dadac2af1cd0bad6905ab1ede153865%40%3Cannounce.httpd.apache.org%3E	CVE
https://lists.apache.org/thread.html/re026d3da9d7824bd93b9f871c0fdda978d960c7e62d8c43cba8d0bf3%40%3Ccvs.httpd.apache.org%3E	CVE	Mailing ListVendor Advisory
https://lists.debian.org/debian-lts-announce/2021/07/msg00006.html	CVE	Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPBR6WUYBJNACHKE65SPL7TJOHX7RHWD/	CVE
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZNCYSR3BXT36FFF4XTCPL3HDQK4VP45R/	CVE
https://security.gentoo.org/glsa/202107-38	CVE	Third Party Advisory
https://security.netapp.com/advisory/ntap-20210702-0001/	CVE	Third Party Advisory
https://www.debian.org/security/2021/dsa-4937	CVE	Mailing ListThird Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.html	CVE	Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/06/10/6	CVE	Mailing ListThird Party Advisory
http://httpd.apache.org/security/vulnerabilities_24.html	[email protected]	Release NotesVendor Advisory
https://lists.apache.org/thread.html/r7f2b70b621651548f4b6f027552f1dd91705d7111bb5d15cda0a68dd%40%3Cdev.httpd.apache.org%3E	[email protected]
https://lists.apache.org/thread.html/rae406c1d19c0dfd3103c96923dadac2af1cd0bad6905ab1ede153865%40%3Cannounce.httpd.apache.org%3E	[email protected]
https://lists.apache.org/thread.html/re026d3da9d7824bd93b9f871c0fdda978d960c7e62d8c43cba8d0bf3%40%3Ccvs.httpd.apache.org%3E	[email protected]	Mailing ListVendor Advisory
https://lists.debian.org/debian-lts-announce/2021/07/msg00006.html	[email protected]	Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPBR6WUYBJNACHKE65SPL7TJOHX7RHWD/	[email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZNCYSR3BXT36FFF4XTCPL3HDQK4VP45R/	[email protected]
https://security.gentoo.org/glsa/202107-38	[email protected]	Third Party Advisory
https://security.netapp.com/advisory/ntap-20210702-0001/	[email protected]	Third Party Advisory
https://www.debian.org/security/2021/dsa-4937	[email protected]	Mailing ListThird Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.html	[email protected]	Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/06/10/6	[email protected]	Mailing ListThird Party Advisory

see all 24 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-476	NULL Pointer Dereference	[email protected]

Affected Products

Product	Versions
apache http server	>= 2.4.0, <= 2.4.46
CPE cpe:2.3:a:apache:http_server:::::::: Remediation No remediation found in references.
debian debian linux	9.0 10.0
CPE cpe:2.3:o:debian:debian_linux:9.0:::::::* cpe:2.3:o:debian:debian_linux:10.0:::::::* Remediation No remediation found in references.
fedoraproject fedora	34 35
CPE cpe:2.3:o:fedoraproject:fedora:34:::::::* cpe:2.3:o:fedoraproject:fedora:35:::::::* Remediation No remediation found in references.
oracle enterprise manager ops center	12.4.0.0
CPE cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:::::::* Remediation No remediation found in references.
oracle instantis enterprisetrack	17.1 17.2 17.3
CPE cpe:2.3:a:oracle:instantis_enterprisetrack:17.1:::::::* cpe:2.3:a:oracle:instantis_enterprisetrack:17.2:::::::* cpe:2.3:a:oracle:instantis_enterprisetrack:17.3:::::::* Remediation No remediation found in references.
oracle zfs storage appliance kit	8.8
CPE cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:::::::* Remediation No remediation found in references.

Change History

16 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Nov 7, 2023	CVE Modified	[email protected]
Dec 1, 2021	Modified Analysis	[email protected]
Oct 20, 2021	CVE Modified	[email protected]
Sep 25, 2021	CVE Modified	[email protected]
Sep 20, 2021	CVE Modified	[email protected]
Sep 20, 2021	Modified Analysis	[email protected]
Jul 17, 2021	CVE Modified	[email protected]
Jul 9, 2021	CVE Modified	[email protected]
Jul 9, 2021	CVE Modified	[email protected]
Jul 2, 2021	CVE Modified	[email protected]
Jun 22, 2021	Initial Analysis	[email protected]
Jun 10, 2021	CVE Modified	[email protected]
Jun 10, 2021	CVE Modified	[email protected]

CVE-2021-26690 Details

Description

Metrics

References to Advisories, Solutions, and Tools

Weakness Enumeration

Affected Products

CPE

Remediation

CPE

Remediation

CPE

Remediation

CPE

Remediation

CPE

Remediation

CPE

Remediation

Change History

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