CVE-2021-26691

Common vulnerabilities & exposures (CVE)

CVE database CVE database blogpost Release & EoL database

Published at: - 10-06-2021 09:15

Last modified: - 25-03-2022 07:32

Total changes: - 11

Description

In Apache HTTP Server versions 2.4.0 to 2.4.46 a specially crafted SessionHeader sent by an origin server could cause a heap overflow

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Low

Attack complexity

Network

Attack vector

High

Availability

High

Confidentiality

High

Integrity

None

Privileges required

Unchanged

Scope

None

User interaction

9.8

Base score

3.9

5.9

Exploitability score

Impact score

Verification logic

vendor=apache AND product=http_server AND versionEndIncluding=2.4.46 AND versionStartIncluding=2.4.0

vendor=Debian AND product=debian_linux AND version=9.0

vendor=Debian AND product=debian_linux AND version=10.0

vendor=fedoraproject AND product=fedora AND version=34

vendor=fedoraproject AND product=fedora AND version=35

vendor=oracle AND product=enterprise_manager_ops_center AND version=12.4.0.0

vendor=oracle AND product=instantis_enterprisetrack AND version=17.1

vendor=oracle AND product=instantis_enterprisetrack AND version=17.2

vendor=oracle AND product=instantis_enterprisetrack AND version=17.3

vendor=oracle AND product=secure_backup AND versionEndExcluding=18.1.0.1.0

vendor=oracle AND product=zfs_storage_appliance_kit AND version=8.8

vendor=netapp AND product=cloud_backup AND version=-

Reference

N/A-Vendor Advisory
N/A-Mailing List, Release Notes, Vendor Advisory
[httpd-dev] 20210610 Re: svn commit: r1890598 - in /httpd/site/trunk/content/security/json: CVE-2019-17567.json CVE-2020-13938.json CVE-2020-13950.json CVE-2020-35452.json CVE-2021-26690.json CVE-2021-26691.json CVE-2021-30641.json CVE-2021-31618.json-Mailing List, Vendor Advisory
[httpd-announce] 20210609 CVE-2021-26691: mod_session response handling heap overflow-Mailing List, Vendor Advisory
[oss-security] 20210609 CVE-2021-26691: Apache httpd: mod_session response handling heap overflow-Mailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20210702-0001/
[debian-lts-announce] 20210709 [SECURITY] [DLA 2706-1] apache2 security update-Mailing List, Third Party Advisory
DSA-4937-Mailing List, Third Party Advisory
GLSA-202107-38-Third Party Advisory
FEDORA-2021-dce7e7738e-Mailing List, Third Party Advisory
FEDORA-2021-e3f6dd670d-Mailing List, Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.html
https://www.oracle.com/security-alerts/cpujan2022.html

Keywords

CVE-2021-26691

Common vulnerabilities & exposures (CVE)

Description

Common Vulnerability Scoring System (CVSS)

Verification logic

Reference

NVD

CVE-2021-26691

CVE

Common vulnerabilities & exposures

CVSS

Common vulnerability scoring system

Security

Vulnerabilities

Exposures