CVE-2020-22218: High severity libssh2 libssh2 vulnerability

Published Aug 22, 2023
·
Updated

An issue was discovered in function libssh2packetadd in libssh2 1.10.0 allows attackers to access out of bounds memory.

Other sources

libssh2 is vulnerable to a denial of service, caused by an out-of-bounds read in the libssh2packetadd function. By sending a specially crafted request, a remote attacker could exploit this vulnerability to cause a denial of service.

— IBM

Affected Software

15 affected componentsFixes available
redhat/libssh2<1.10.0
1.10.0
redhat/libssh2<1.11.0
1.11.0
ubuntu/libssh2<1.8.0-1ubuntu0.1
1.8.0-1ubuntu0.1
ubuntu/libssh2<1.8.0-2.1ubuntu0.1
1.8.0-2.1ubuntu0.1
ubuntu/libssh2<1.4.3-2ubuntu0.2+
1.4.3-2ubuntu0.2+
ubuntu/libssh2<1.5.0-2ubuntu0.1+
1.5.0-2ubuntu0.1+
debian/libssh2<=1.8.0-2.1, <=1.9.0-2
1.8.0-2.1+deb10u11.10.0-31.11.0-4
libssh2 libssh2=1.10.0
IBM QRadar SIEM<=7.5 - 7.5.0 UP7
F5 BIG-IP>=17.1.0<=17.1.2
17.1.2.2
F5 BIG-IP>=16.1.0<=16.1.6
F5 BIG-IP>=15.1.0<=15.1.10
F5 BIG-IQ Centralized Management>=8.0.0<=8.4.0
8.4.1
F5 F5OS-A=1.5.0, =1.4.0, >=1.3.0<=1.3.2
1.7.01.5.2
F5 F5OS-C=1.6.0, >=1.5.0<=1.5.1
1.8.0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/libssh2 to a version that resolves this vulnerability.

    Fixed in 1.10.0
  2. Upgrade

    Upgrade redhat/libssh2 to a version that resolves this vulnerability.

    Fixed in 1.11.0
  3. Upgrade

    Upgrade ubuntu/libssh2 to a version that resolves this vulnerability.

    Fixed in 1.8.0-1ubuntu0.1
  4. Upgrade

    Upgrade ubuntu/libssh2 to a version that resolves this vulnerability.

    Fixed in 1.8.0-2.1ubuntu0.1
  5. Upgrade

    Upgrade ubuntu/libssh2 to a version that resolves this vulnerability.

    Fixed in 1.4.3-2ubuntu0.2+
  6. Upgrade

    Upgrade ubuntu/libssh2 to a version that resolves this vulnerability.

    Fixed in 1.5.0-2ubuntu0.1+
  7. Upgrade

    Upgrade debian/libssh2 to a version that resolves this vulnerability.

    Fixed in 1.8.0-2.1+deb10u1Fixed in 1.10.0-3Fixed in 1.11.0-4
  8. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 17.1.2.2
  9. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 8.4.1
  10. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 1.7.01.5.2
  11. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 1.8.0
  12. Upgrade

    Upgrade libssh2 to a version that resolves this vulnerability.

    Patch 642eec48ff3adfdb7a9e562b6d7fc865d1733f45

Event History

Aug 22, 2023
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
Description
Data Sourced
via NVD·07:16 PM
RemedyDescriptionSeverityWeaknessAffected Software
Jan 11, 2024
Data Sourced
via Launchpad·11:45 PM
Description
Jan 13, 2024
Advisory Published
via F5·12:06 AM
Data Sourced
via F5·12:06 AM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is CVE-2020-22218?

CVE-2020-22218 is a vulnerability in libssh2 1.10.0 that allows attackers to access out-of-bounds memory.

2

How severe is CVE-2020-22218?

CVE-2020-22218 has a severity rating of 7.5 (high).

3

What software versions are affected by CVE-2020-22218?

CVE-2020-22218 affects libssh2 1.10.0, ubuntu/libssh2 1.4.3-2ubuntu0.2+, ubuntu/libssh2 1.5.0-2ubuntu0.1+, ubuntu/libssh2 1.8.0-1ubuntu0.1, ubuntu/libssh2 1.8.0-2.1ubuntu0.1, and debian/libssh2 1.8.0-2.1+deb10u1, 1.10.0-3, and 1.11.0-2.

4

How can I fix CVE-2020-22218?

To fix CVE-2020-22218, update to a version of libssh2 that is not affected by the vulnerability.

5

Where can I find more information about CVE-2020-22218?

You can find more information about CVE-2020-22218 at the following references: [GitHub](https://github.com/libssh2/libssh2/pull/476), [Debian LTS](https://lists.debian.org/debian-lts-announce/2023/09/msg00006.html), [CVE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-22218).

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