CVE-2020-1763

Published on: 05/12/2020 12:00:00 AM UTC

Last Modified on: 05/05/2021 01:41:00 PM UTC

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Certain versions of Libreswan from Libreswan contain the following vulnerability:

An out-of-bounds buffer read flaw was found in the pluto daemon of libreswan from versions 3.27 till 3.31 where, an unauthenticated attacker could use this flaw to crash libreswan by sending specially-crafted IKEv1 Informational Exchange packets. The daemon respawns after the crash.

  • CVE-2020-1763 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as HIGH severity.
  • Affected Vendor/Software: URL Logo the libreswan Project - libreswan version from versions 3.27 till 3.31

CVSS3 Score: 7.5 - HIGH

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
NETWORK LOW NONE NONE
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
UNCHANGED NONE NONE HIGH

CVSS2 Score: 5 - MEDIUM

Access
Vector
Access
Complexity
Authentication
NETWORK LOW NONE
Confidentiality
Impact
Integrity
Impact
Availability
Impact
NONE NONE PARTIAL

CVE References

Description Tags Link
Siemens RUGGEDCOM ROX II | CISA us-cert.cisa.gov
text/html
URL Logo MISC us-cert.cisa.gov/ics/advisories/icsa-21-040-04
1814541 – (CVE-2020-1763) CVE-2020-1763 libreswan: DoS attack via malicious IKEv1 informational exchange message Issue Tracking
Third Party Advisory
bugzilla.redhat.com
text/html
URL Logo CONFIRM bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1763
Debian -- Security Information -- DSA-4684-1 libreswan Third Party Advisory
www.debian.org
Depreciated Link
text/html
URL Logo DEBIAN DSA-4684
Patch
Vendor Advisory
libreswan.org
text/x-diff
URL Logo CONFIRM libreswan.org/security/CVE-2020-1763/CVE-2020-1763.txt
security: Fix for CVE-2020-1763 · libreswan/[email protected] · GitHub Patch
Third Party Advisory
github.com
text/html
URL Logo CONFIRM github.com/libreswan/libreswan/commit/471a3e41a449d7c753bc4edbba4239501bb62ba8
cert-portal.siemens.com
application/pdf
URL Logo CONFIRM cert-portal.siemens.com/productcert/pdf/ssa-379803.pdf
Libreswan: Denial of service (GLSA 202007-21) — Gentoo security security.gentoo.org
text/html
URL Logo GENTOO GLSA-202007-21
Bug Access Denied Issue Tracking
Third Party Advisory
bugzilla.redhat.com
text/html
URL Logo MISC bugzilla.redhat.com/show_bug.cgi?id=1813329

Related QID Numbers

  • 501057 Alpine Linux Security Update for libreswan

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
ApplicationLibreswanLibreswan3.5AllAllAll
ApplicationLibreswanLibreswan3.5AllAllAll
ApplicationLibreswanLibreswanAllAllAllAll
  • cpe:2.3:a:libreswan:libreswan:3.5:*:*:*:*:*:*:*:
  • cpe:2.3:a:libreswan:libreswan:3.5:*:*:*:*:*:*:*:
  • cpe:2.3:a:libreswan:libreswan:*:*:*:*:*:*:*:*:

Social Mentions

Source Title Posted (UTC)
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