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redhatRedHatRHSA-2021:4257
HistoryNov 09, 2021 - 8:52 a.m.

(RHSA-2021:4257) Moderate: httpd:2.4 security, bug fix, and enhancement update

2021-11-0908:52:38
access.redhat.com
43
rhsa-2021-4257
httpd packages
mod_session
null pointer dereference
cve-2021-26690
unexpected url matching
cve-2021-30641
red hat enterprise linux

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0.082

Percentile

94.5%

JSON

The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.

Security Fix(es):

  • httpd: mod_session: NULL pointer dereference when parsing Cookie header (CVE-2021-26690)

  • httpd: Unexpected URL matching with ‘MergeSlashes OFF’ (CVE-2021-30641)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.5 Release Notes linked from the References section.

OSVersionArchitecturePackageVersionFilename
RedHatanyaarch64httpd-debugsource< 2.4.37-41.module+el8.5.0+11772+c8e0c271httpd-debugsource-2.4.37-41.module+el8.5.0+11772+c8e0c271.aarch64.rpm
RedHatanyaarch64mod_md-debuginfo< 2.0.8-8.module+el8.3.0+6814+67d1e611mod_md-debuginfo-2.0.8-8.module+el8.3.0+6814+67d1e611.aarch64.rpm
RedHatanyx86_64mod_proxy_html-debuginfo< 2.4.37-41.module+el8.5.0+11772+c8e0c271mod_proxy_html-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64.rpm
RedHatanys390xmod_ldap-debuginfo< 2.4.37-41.module+el8.5.0+11772+c8e0c271mod_ldap-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.s390x.rpm
RedHatanys390xmod_md-debuginfo< 2.0.8-8.module+el8.3.0+6814+67d1e611mod_md-debuginfo-2.0.8-8.module+el8.3.0+6814+67d1e611.s390x.rpm
RedHatanyaarch64mod_proxy_html< 2.4.37-41.module+el8.5.0+11772+c8e0c271mod_proxy_html-2.4.37-41.module+el8.5.0+11772+c8e0c271.aarch64.rpm
RedHatanyaarch64mod_session-debuginfo< 2.4.37-41.module+el8.5.0+11772+c8e0c271mod_session-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.aarch64.rpm
RedHatanyx86_64mod_ssl-debuginfo< 2.4.37-41.module+el8.5.0+11772+c8e0c271mod_ssl-debuginfo-2.4.37-41.module+el8.5.0+11772+c8e0c271.x86_64.rpm
RedHatanyppc64lemod_proxy_html< 2.4.37-41.module+el8.5.0+11772+c8e0c271mod_proxy_html-2.4.37-41.module+el8.5.0+11772+c8e0c271.ppc64le.rpm
RedHatanys390xmod_md< 2.0.8-8.module+el8.3.0+6814+67d1e611mod_md-2.0.8-8.module+el8.3.0+6814+67d1e611.s390x.rpm
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1-10 of 821

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CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

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Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

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User Interaction

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Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0.082

Percentile

94.5%

JSON
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