Vulnerability Details : CVE-2020-1763
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.
Products affected by CVE-2020-1763
- cpe:2.3:a:libreswan:libreswan:*:*:*:*:*:*:*:*
- cpe:2.3:a:libreswan:libreswan:3.5:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-1763
4.76%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 89 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-1763
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
7.5
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
Red Hat, Inc. | |
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2020-1763
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by:
- nvd@nist.gov (Secondary)
- secalert@redhat.com (Primary)
References for CVE-2020-1763
-
https://www.debian.org/security/2020/dsa-4684
Debian -- Security Information -- DSA-4684-1 libreswanThird Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=1813329
Bug Access DeniedIssue Tracking;Third Party Advisory
-
https://us-cert.cisa.gov/ics/advisories/icsa-21-040-04
Siemens RUGGEDCOM ROX II | CISAThird Party Advisory;US Government Resource
-
https://github.com/libreswan/libreswan/commit/471a3e41a449d7c753bc4edbba4239501bb62ba8
security: Fix for CVE-2020-1763 · libreswan/libreswan@471a3e4 · GitHubPatch;Third Party Advisory
-
https://cert-portal.siemens.com/productcert/pdf/ssa-379803.pdf
Third Party Advisory
-
https://security.gentoo.org/glsa/202007-21
Libreswan: Denial of service (GLSA 202007-21) — Gentoo securityThird Party Advisory
-
https://libreswan.org/security/CVE-2020-1763/CVE-2020-1763.txt
Patch;Vendor Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1763
1814541 – (CVE-2020-1763) CVE-2020-1763 libreswan: DoS attack via malicious IKEv1 informational exchange messageIssue Tracking;Third Party Advisory
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