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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.29%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 3.29% probability · 88th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- libreswan/libreswan
- Source
- secalert@redhat.com
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1813329Issue Tracking, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1763Issue Tracking, Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-379803.pdfThird Party Advisory
- https://github.com/libreswan/libreswan/commit/471a3e41a449d7c753bc4edbba4239501bb62ba8Patch, Third Party Advisory
- https://libreswan.org/security/CVE-2020-1763/CVE-2020-1763.txtPatch, Vendor Advisory
- https://security.gentoo.org/glsa/202007-21Third Party Advisory
- https://us-cert.cisa.gov/ics/advisories/icsa-21-040-04Third Party Advisory, US Government Resource
- https://www.debian.org/security/2020/dsa-4684Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1813329Issue Tracking, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1763Issue Tracking, Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-379803.pdfThird Party Advisory
- https://github.com/libreswan/libreswan/commit/471a3e41a449d7c753bc4edbba4239501bb62ba8Patch, Third Party Advisory
- https://libreswan.org/security/CVE-2020-1763/CVE-2020-1763.txtPatch, Vendor Advisory
- https://security.gentoo.org/glsa/202007-21Third Party Advisory
- https://us-cert.cisa.gov/ics/advisories/icsa-21-040-04Third Party Advisory, US Government Resource
- https://www.debian.org/security/2020/dsa-4684Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.