7.5 High
CVSS3
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
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.003 Low
EPSS
Percentile
69.7%
Package : varnish
Version : 6.1.1-1+deb10u4
CVE ID : CVE-2020-11653 CVE-2022-45060
Debian Bug : 956307 1023751
Martin van Kervel Smedshammer discovered a request forgery attack can be
performed on Varnish Cache servers that have the HTTP/2 protocol turned on. An
attacker may introduce characters through the HTTP/2 pseudo-headers that are
invalid in the context of an HTTP/1 request line, causing the Varnish server to
produce invalid HTTP/1 requests to the backend. This may in turn be used to
successfully exploit vulnerabilities in a server behind the Varnish server.
For Debian 10 buster, these problems have been fixed in version
6.1.1-1+deb10u4.
We recommend that you upgrade your varnish packages.
For the detailed security status of varnish please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/varnish
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 10 | all | varnish-doc | < 6.1.1-1+deb10u4 | varnish-doc_6.1.1-1+deb10u4_all.deb |
Debian | 10 | all | varnish | < 6.1.1-1+deb10u4 | varnish_6.1.1-1+deb10u4_all.deb |
Debian | 10 | all | libvarnishapi-dev | < 6.1.1-1+deb10u4 | libvarnishapi-dev_6.1.1-1+deb10u4_all.deb |
Debian | 10 | all | libvarnishapi2 | < 6.1.1-1+deb10u4 | libvarnishapi2_6.1.1-1+deb10u4_all.deb |
7.5 High
CVSS3
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
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.003 Low
EPSS
Percentile
69.7%