CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
78.6%
Debian Security Advisory DSA-4965-1 [email protected]
https://www.debian.org/security/ Moritz Muehlenhoff
August 31, 2021 https://www.debian.org/security/faq
Package : libssh
CVE ID : CVE-2021-3634
Debian Bug : 993046
It was discovered that a buffer overflow in rekeying in libssh could
result in denial of service or potentially the execution of arbitrary
code.
The oldstable distribution (buster) is not affected.
For the stable distribution (bullseye), this problem has been fixed in
version 0.9.5-1+deb11u1.
We recommend that you upgrade your libssh packages.
For the detailed security status of libssh please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/libssh
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: [email protected]
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 11 | mipsel | libssh-gcrypt-4 | < 0.9.5-1+deb11u1 | libssh-gcrypt-4_0.9.5-1+deb11u1_mipsel.deb |
Debian | 11 | amd64 | libssh-gcrypt-dev | < 0.9.5-1+deb11u1 | libssh-gcrypt-dev_0.9.5-1+deb11u1_amd64.deb |
Debian | 11 | arm64 | libssh-gcrypt-4-dbgsym | < 0.9.5-1+deb11u1 | libssh-gcrypt-4-dbgsym_0.9.5-1+deb11u1_arm64.deb |
Debian | 11 | armel | libssh-gcrypt-dev | < 0.9.5-1+deb11u1 | libssh-gcrypt-dev_0.9.5-1+deb11u1_armel.deb |
Debian | 11 | ppc64el | libssh-dev | < 0.9.5-1+deb11u1 | libssh-dev_0.9.5-1+deb11u1_ppc64el.deb |
Debian | 11 | armhf | libssh-gcrypt-dev | < 0.9.5-1+deb11u1 | libssh-gcrypt-dev_0.9.5-1+deb11u1_armhf.deb |
Debian | 11 | mips64el | libssh-gcrypt-dev | < 0.9.5-1+deb11u1 | libssh-gcrypt-dev_0.9.5-1+deb11u1_mips64el.deb |
Debian | 11 | amd64 | libssh-gcrypt-4 | < 0.9.5-1+deb11u1 | libssh-gcrypt-4_0.9.5-1+deb11u1_amd64.deb |
Debian | 11 | s390x | libssh-4-dbgsym | < 0.9.5-1+deb11u1 | libssh-4-dbgsym_0.9.5-1+deb11u1_s390x.deb |
Debian | 11 | armhf | libssh-dev | < 0.9.5-1+deb11u1 | libssh-dev_0.9.5-1+deb11u1_armhf.deb |
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
78.6%