Vulnerability Report

CVE-2020-1763

Title: Libreswan Memory Corruption

Memory Corruption

Proof Of Concept

No public PoC currently indexed for CVE-2020-1763.

CWE Category CWE-125
Published Date May 12, 2020
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 7.5 CVSS v3.1
Exploit Probability (EPSS)
5.68%

Vulnerability Summary

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.

Impacted Vendors

L
libreswan 1

Reference Links

https://bugzilla.redhat.com/show_bug.cgi?id=1813329 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1763 https://cert-portal.siemens.com/productcert/pdf/ssa-379803.pdf https://github.com/libreswan/libreswan/commit/471a3e41a449d7c753bc4edbba4239501bb62ba8 https://libreswan.org/security/CVE-2020-1763/CVE-2020-1763.txt https://security.gentoo.org/glsa/202007-21 https://us-cert.cisa.gov/ics/advisories/icsa-21-040-04 https://www.debian.org/security/2020/dsa-4684 https://bugzilla.redhat.com/show_bug.cgi?id=1813329 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1763 https://cert-portal.siemens.com/productcert/pdf/ssa-379803.pdf https://github.com/libreswan/libreswan/commit/471a3e41a449d7c753bc4edbba4239501bb62ba8 https://libreswan.org/security/CVE-2020-1763/CVE-2020-1763.txt https://security.gentoo.org/glsa/202007-21 https://us-cert.cisa.gov/ics/advisories/icsa-21-040-04 https://www.debian.org/security/2020/dsa-4684
CVSS v3.1
Source Entity [email protected]
Severity HIGH
7.5
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v3.1
Source Entity [email protected]
Severity HIGH
7.5
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v2.0
Source Entity [email protected]
Severity MEDIUM
5.0
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:L/Au:N/C:N/I:N/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2020-1763 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Stack

No specific products linked.