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redhatcveRedhat.comRH:CVE-2021-26691
HistoryJun 08, 2021 - 3:17 a.m.

CVE-2021-26691

2021-06-0803:17:19
redhat.com
access.redhat.com
295

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.689 Medium

EPSS

Percentile

98.0%

JSON

A heap overflow flaw was found In Apache httpd mod_session. The highest threat from this vulnerability is to system availability.

Mitigation

Only configurations which use the "SessionEnv" directive (which is not widely used) are vulnerable to this flaw. SessionEnv is not enabled in default configuration of httpd package shipped with Red Hat Products.

Related

nessus 55
veracode 1
cve 2
altlinux 2
cbl_mariner 2
f5 1
osv 10
prion 2
ubuntucve 2
debiancve 2
openvas 29
httpd 1
alpinelinux 1
oraclelinux 2
ibm 7
almalinux 2
redhat 5
rocky 2
redhatcve 1
centos 1
ubuntu 2
debian 2
photon 3
suse 2
mageia 1
gentoo 1
rosalinux 2
slackware 1
amazon 3
freebsd 1
kaspersky 1
ics 1
fedora 2
oracle 3
nessus
nessus
CBL Mariner 2.0 Security Update: httpd (CVE-2021-26691)
2023-03-20 00:00:00
EulerOS 2.0 SP5 : httpd (EulerOS-SA-2021-2500)
2021-09-27 00:00:00
CentOS 8 : httpd:2.4 (CESA-2021:3816)
2021-10-13 00:00:00
veracode
veracode
Denial Of Service (DoS)
2021-06-13 03:24:47
cve
cve
CVE-2021-26691
2021-06-10 07:15:00
CVE-2021-20325
2022-02-18 18:15:00
altlinux
altlinux
Security fix for the ALT Linux 9 package apache2 version 1:2.4.48-alt3.1
2021-07-22 00:00:00
Security fix for the ALT Linux 10 package apache2 version 1:2.4.48-alt3.1
2021-07-22 00:00:00
cbl_mariner
cbl_mariner
CVE-2021-26691 affecting package httpd 2.4.46-6
2021-07-08 21:56:40
CVE-2021-26691 affecting package httpd 2.4.46-10
2022-04-09 06:51:57
f5
f5
K32305110 : mod_session vulnerability CVE-2021-26691
2022-04-15 00:00:00
osv
osv
BIT-apache-2021-26691
2024-03-06 10:56:15
CVE-2021-26691
2021-06-10 07:15:07
Important: httpd:2.4 security update
2021-10-12 15:53:03
prion
prion
Heap overflow
2021-06-10 07:15:00
Design/Logic Flaw
2022-02-18 18:15:00
ubuntucve
ubuntucve
CVE-2021-26691
2021-06-10 00:00:00
CVE-2021-20325
2022-02-18 00:00:00
debiancve
debiancve
CVE-2021-26691
2021-06-10 07:15:00
CVE-2021-20325
2022-02-18 18:15:00
openvas
openvas
Huawei EulerOS: Security Advisory for httpd (EulerOS-SA-2021-2500)
2021-09-28 00:00:00
Huawei EulerOS: Security Advisory for httpd (EulerOS-SA-2021-2463)
2021-09-24 00:00:00
Huawei EulerOS: Security Advisory for httpd (EulerOS-SA-2021-2381)
2021-09-15 00:00:00
httpd
httpd
Apache Httpd < 2.4.48 : mod_session response handling heap overflow
2021-03-01 00:00:00
alpinelinux
alpinelinux
CVE-2021-26691
2021-06-10 07:15:00
oraclelinux
oraclelinux
httpd:2.4 security update
2021-10-13 00:00:00
httpd security update
2022-01-18 00:00:00
ibm
ibm
Security Bulletin: A security vulnerability has been identified in IBM WebSphere Application Server, which is a required product for IBM Tivoli Network Manager IP Edition (CVE-2021-26690, CVE-2021-26691)
2021-07-30 05:03:18
Security Bulletin: A security vulnerability has been identified in IBM WebSphere Application Server, which is a required product for IBM Tivoli Network Manager IP Edition (CVE-2021-26690, CVE-2021-26691)
2021-07-02 13:49:24
Security Bulletin: Multiple vulnerabilities in IBM HTTP Server used by WebSphere Application Server
2021-06-28 15:35:13
almalinux
almalinux
Important: httpd:2.4 security update
2021-10-12 15:53:03
Important: httpd:2.4 security update
2021-11-09 19:25:44
redhat
redhat
(RHSA-2021:3816) Important: httpd:2.4 security update
2021-10-12 15:53:03
(RHSA-2021:4537) Important: httpd:2.4 security update
2021-11-09 19:25:44
(RHSA-2022:0143) Important: httpd security update
2022-01-17 08:16:34
rocky
rocky
httpd:2.4 security update
2021-10-12 15:53:03
httpd:2.4 security update
2021-11-09 19:25:44
redhatcve
redhatcve
CVE-2021-20325
2021-11-09 09:06:32
centos
centos
httpd, mod_ldap, mod_proxy_html, mod_session, mod_ssl security update
2022-01-25 17:31:14
ubuntu
ubuntu
Apache HTTP Server vulnerabilities
2021-06-21 00:00:00
Apache HTTP Server vulnerabilities
2021-06-21 00:00:00
debian
debian
[SECURITY] [DSA 4937-1] apache2 security update
2021-07-08 17:14:14
[SECURITY] [DLA 2706-1] apache2 security update
2021-07-09 08:50:21
photon
photon
Home Download Photon OS User Documentation FAQ Security Advisories Related Information Lightwave - PHSA-2021-2.0-0365
2021-06-30 00:00:00
Home Download Photon OS User Documentation FAQ Security Advisories Related Information Lightwave - PHSA-2021-1.0-0409
2021-07-01 00:00:00
Critical Photon OS Security Update - PHSA-2021-0409
2021-07-01 00:00:00
suse
suse
Security update for apache2 (important)
2021-07-10 00:00:00
Security update for apache2 (important)
2021-06-24 00:00:00
mageia
mageia
Updated apache packages fix security vulnerabilities
2021-06-16 23:22:25
gentoo
gentoo
Apache: Multiple vulnerabilities
2021-07-17 00:00:00
rosalinux
rosalinux
Advisory ROSA-SA-2023-2158
2023-04-25 11:30:17
Advisory ROSA-SA-2023-2159
2023-04-25 11:49:15
slackware
slackware
[slackware-security] httpd
2021-06-07 19:07:12
amazon
amazon
Medium: httpd24
2021-07-08 18:38:00
Medium: httpd
2021-07-01 00:59:00
Important: httpd
2021-06-16 20:37:00
freebsd
freebsd
Apache httpd -- Multiple vulnerabilities
2021-06-09 00:00:00
kaspersky
kaspersky
KLA12369 Multiple vulnerabilities in Apache HTTP Server
2021-06-01 00:00:00
ics
ics
Mitsubishi Electric MELSOFT iQ AppPortal
2022-05-12 12:00:00
fedora
fedora
[SECURITY] Fedora 34 Update: httpd-2.4.49-1.fc34
2021-09-20 13:58:04
[SECURITY] Fedora 35 Update: httpd-2.4.49-1.fc35
2021-09-24 20:56:12
oracle
oracle
Oracle Critical Patch Update Advisory - October 2022
2022-10-18 00:00:00
Oracle Critical Patch Update Advisory - January 2022
2022-01-18 00:00:00
Oracle Critical Patch Update Advisory - October 2021
2021-10-19 00:00:00

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.689 Medium

EPSS

Percentile

98.0%

JSON
Related for RH:CVE-2021-26691
nessus55veracode1cve2altlinux2cbl_mariner2f51osv10prion2ubuntucve2debiancve2openvas29httpd1alpinelinux1oraclelinux2ibm7almalinux2redhat5rocky2redhatcve1centos1ubuntu2debian2photon3suse2mageia1gentoo1rosalinux2slackware1amazon3freebsd1kaspersky1ics1fedora2oracle3