CVSS2
Attack Vector
NETWORK
Attack 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
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
AI Score
Confidence
High
EPSS
Percentile
69.6%
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
Attachment:
signature.asc
Description: This is a digitally signed message part
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 11 | all | varnish-doc | < 6.5.1-1+deb11u3 | varnish-doc_6.5.1-1+deb11u3_all.deb |
Debian | 11 | armhf | libvarnishapi2 | < 6.5.1-1+deb11u3 | libvarnishapi2_6.5.1-1+deb11u3_armhf.deb |
Debian | 10 | armhf | libvarnishapi2-dbgsym | < 6.1.1-1+deb10u4 | libvarnishapi2-dbgsym_6.1.1-1+deb10u4_armhf.deb |
Debian | 10 | amd64 | libvarnishapi2 | < 6.1.1-1+deb10u4 | libvarnishapi2_6.1.1-1+deb10u4_amd64.deb |
Debian | 11 | s390x | varnish | < 6.5.1-1+deb11u3 | varnish_6.5.1-1+deb11u3_s390x.deb |
Debian | 11 | i386 | varnish-dbgsym | < 6.5.1-1+deb11u3 | varnish-dbgsym_6.5.1-1+deb11u3_i386.deb |
Debian | 11 | ppc64el | varnish | < 6.5.1-1+deb11u3 | varnish_6.5.1-1+deb11u3_ppc64el.deb |
Debian | 11 | mipsel | libvarnishapi2-dbgsym | < 6.5.1-1+deb11u3 | libvarnishapi2-dbgsym_6.5.1-1+deb11u3_mipsel.deb |
Debian | 10 | i386 | varnish | < 6.1.1-1+deb10u4 | varnish_6.1.1-1+deb10u4_i386.deb |
Debian | 10 | i386 | varnish-dbgsym | < 6.1.1-1+deb10u4 | varnish-dbgsym_6.1.1-1+deb10u4_i386.deb |
CVSS2
Attack Vector
NETWORK
Attack 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
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
AI Score
Confidence
High
EPSS
Percentile
69.6%