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redhatRedHatRHSA-2023:5930
HistoryOct 19, 2023 - 12:48 p.m.

(RHSA-2023:5930) Important: varnish security update

2023-10-1912:48:50
access.redhat.com
18
http/2 web servers
ddos attack
cve-2023-44487
security update
varnish cache
cvss score

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

0.838

Percentile

98.5%

JSON

Varnish Cache is a high-performance HTTP accelerator. It stores web pages in memory so web servers don’t have to create the same web page over and over again, giving the website a significant speed up.

Security Fix(es):

  • HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS attack (Rapid Reset Attack) (CVE-2023-44487)

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.

OSVersionArchitecturePackageVersionFilename
RedHat9s390xvarnish< 6.6.2-2.el9_0.2varnish-6.6.2-2.el9_0.2.s390x.rpm
RedHat9aarch64varnish< 6.6.2-2.el9_0.2varnish-6.6.2-2.el9_0.2.aarch64.rpm
RedHat9ppc64levarnish< 6.6.2-2.el9_0.2varnish-6.6.2-2.el9_0.2.ppc64le.rpm
RedHat9ppc64levarnish-devel< 6.6.2-2.el9_0.2varnish-devel-6.6.2-2.el9_0.2.ppc64le.rpm
RedHat9aarch64varnish-devel< 6.6.2-2.el9_0.2varnish-devel-6.6.2-2.el9_0.2.aarch64.rpm
RedHat9i686varnish< 6.6.2-2.el9_0.2varnish-6.6.2-2.el9_0.2.i686.rpm
RedHat9s390xvarnish-docs< 6.6.2-2.el9_0.2varnish-docs-6.6.2-2.el9_0.2.s390x.rpm
RedHat9x86_64varnish-devel< 6.6.2-2.el9_0.2varnish-devel-6.6.2-2.el9_0.2.x86_64.rpm
RedHat9aarch64varnish-docs< 6.6.2-2.el9_0.2varnish-docs-6.6.2-2.el9_0.2.aarch64.rpm
RedHat9x86_64varnish-docs< 6.6.2-2.el9_0.2varnish-docs-6.6.2-2.el9_0.2.x86_64.rpm
Rows per page:
1-10 of 141

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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

0.838

Percentile

98.5%

JSON
Related for RHSA-2023:5930
cbl_mariner20osv89openvas20nessus31almalinux5redhat17rocky3amazon1fedora3ibm2atlassian1redos1veracode1github1debian2oraclelinux1githubexploit1