Red Hat Security Advisory: libreswan security update
An update for libreswan is now available for Red Hat Enterprise Linux 8.4 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2022-23094US | high7.5 | — | ||
Libreswan 4.2 through 4.5 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted IKEv1 packet because pluto/ikev1.c wrongly… | ||||
references
External citations — patches, advisories, analysis.
remediations (26)
- Fixedlibreswan-0:4.3-6.el8_4.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.8.4)
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2022:0239 - Fixedlibreswan-0:4.3-6.el8_4.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.8.4)
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2022:0239 - Fixedlibreswan-0:4.3-6.el8_4.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.8.4)
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2022:0239 - Fixedlibreswan-0:4.3-6.el8_4.src as a component of Red Hat Enterprise Linux AppStream EUS (v.8.4)
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2022:0239 - Fixedlibreswan-0:4.3-6.el8_4.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.8.4)
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2022:0239 - Fixedlibreswan-debuginfo-0:4.3-6.el8_4.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.8.4)
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2022:0239 - Fixedlibreswan-debuginfo-0:4.3-6.el8_4.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.8.4)
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2022:0239 - Fixedlibreswan-debuginfo-0:4.3-6.el8_4.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.8.4)
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2022:0239 - Fixedlibreswan-debuginfo-0:4.3-6.el8_4.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.8.4)
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2022:0239 - Fixedlibreswan-debugsource-0:4.3-6.el8_4.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.8.4)
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2022:0239 - Fixedlibreswan-debugsource-0:4.3-6.el8_4.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.8.4)
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2022:0239 - Fixedlibreswan-debugsource-0:4.3-6.el8_4.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.8.4)
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2022:0239 - Fixedlibreswan-debugsource-0:4.3-6.el8_4.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.8.4)
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2022:0239 - Workaroundlibreswan-0:4.3-6.el8_4.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.8.4)
If all configured connections are using IKEv2, the IKEv1 subsystem can be disabled by adding the option ikev1-policy=drop to the "config setup" section of ipsec.conf. Alternatively, libreswan can be compiled with USE_IKEv1=false. If all remote peers are on static IP addresses, a firewall rule blocking UDP port 500 and 4500 can be installed to prevent attackers from sending packets to the pluto IKE daemon. If peers appear on dynamic IP addresses and IKEv1 connections must be supported, then no workarounds are known, and libreswan must be updated or patched.
- Workaroundlibreswan-0:4.3-6.el8_4.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.8.4)
If all configured connections are using IKEv2, the IKEv1 subsystem can be disabled by adding the option ikev1-policy=drop to the "config setup" section of ipsec.conf. Alternatively, libreswan can be compiled with USE_IKEv1=false. If all remote peers are on static IP addresses, a firewall rule blocking UDP port 500 and 4500 can be installed to prevent attackers from sending packets to the pluto IKE daemon. If peers appear on dynamic IP addresses and IKEv1 connections must be supported, then no workarounds are known, and libreswan must be updated or patched.
- Workaroundlibreswan-0:4.3-6.el8_4.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.8.4)
If all configured connections are using IKEv2, the IKEv1 subsystem can be disabled by adding the option ikev1-policy=drop to the "config setup" section of ipsec.conf. Alternatively, libreswan can be compiled with USE_IKEv1=false. If all remote peers are on static IP addresses, a firewall rule blocking UDP port 500 and 4500 can be installed to prevent attackers from sending packets to the pluto IKE daemon. If peers appear on dynamic IP addresses and IKEv1 connections must be supported, then no workarounds are known, and libreswan must be updated or patched.
- Workaroundlibreswan-0:4.3-6.el8_4.src as a component of Red Hat Enterprise Linux AppStream EUS (v.8.4)
If all configured connections are using IKEv2, the IKEv1 subsystem can be disabled by adding the option ikev1-policy=drop to the "config setup" section of ipsec.conf. Alternatively, libreswan can be compiled with USE_IKEv1=false. If all remote peers are on static IP addresses, a firewall rule blocking UDP port 500 and 4500 can be installed to prevent attackers from sending packets to the pluto IKE daemon. If peers appear on dynamic IP addresses and IKEv1 connections must be supported, then no workarounds are known, and libreswan must be updated or patched.
- Workaroundlibreswan-0:4.3-6.el8_4.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.8.4)
If all configured connections are using IKEv2, the IKEv1 subsystem can be disabled by adding the option ikev1-policy=drop to the "config setup" section of ipsec.conf. Alternatively, libreswan can be compiled with USE_IKEv1=false. If all remote peers are on static IP addresses, a firewall rule blocking UDP port 500 and 4500 can be installed to prevent attackers from sending packets to the pluto IKE daemon. If peers appear on dynamic IP addresses and IKEv1 connections must be supported, then no workarounds are known, and libreswan must be updated or patched.
- Workaroundlibreswan-debuginfo-0:4.3-6.el8_4.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.8.4)
If all configured connections are using IKEv2, the IKEv1 subsystem can be disabled by adding the option ikev1-policy=drop to the "config setup" section of ipsec.conf. Alternatively, libreswan can be compiled with USE_IKEv1=false. If all remote peers are on static IP addresses, a firewall rule blocking UDP port 500 and 4500 can be installed to prevent attackers from sending packets to the pluto IKE daemon. If peers appear on dynamic IP addresses and IKEv1 connections must be supported, then no workarounds are known, and libreswan must be updated or patched.
- Workaroundlibreswan-debuginfo-0:4.3-6.el8_4.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.8.4)
If all configured connections are using IKEv2, the IKEv1 subsystem can be disabled by adding the option ikev1-policy=drop to the "config setup" section of ipsec.conf. Alternatively, libreswan can be compiled with USE_IKEv1=false. If all remote peers are on static IP addresses, a firewall rule blocking UDP port 500 and 4500 can be installed to prevent attackers from sending packets to the pluto IKE daemon. If peers appear on dynamic IP addresses and IKEv1 connections must be supported, then no workarounds are known, and libreswan must be updated or patched.
- Workaroundlibreswan-debuginfo-0:4.3-6.el8_4.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.8.4)
If all configured connections are using IKEv2, the IKEv1 subsystem can be disabled by adding the option ikev1-policy=drop to the "config setup" section of ipsec.conf. Alternatively, libreswan can be compiled with USE_IKEv1=false. If all remote peers are on static IP addresses, a firewall rule blocking UDP port 500 and 4500 can be installed to prevent attackers from sending packets to the pluto IKE daemon. If peers appear on dynamic IP addresses and IKEv1 connections must be supported, then no workarounds are known, and libreswan must be updated or patched.
- Workaroundlibreswan-debuginfo-0:4.3-6.el8_4.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.8.4)
If all configured connections are using IKEv2, the IKEv1 subsystem can be disabled by adding the option ikev1-policy=drop to the "config setup" section of ipsec.conf. Alternatively, libreswan can be compiled with USE_IKEv1=false. If all remote peers are on static IP addresses, a firewall rule blocking UDP port 500 and 4500 can be installed to prevent attackers from sending packets to the pluto IKE daemon. If peers appear on dynamic IP addresses and IKEv1 connections must be supported, then no workarounds are known, and libreswan must be updated or patched.
- Workaroundlibreswan-debugsource-0:4.3-6.el8_4.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.8.4)
If all configured connections are using IKEv2, the IKEv1 subsystem can be disabled by adding the option ikev1-policy=drop to the "config setup" section of ipsec.conf. Alternatively, libreswan can be compiled with USE_IKEv1=false. If all remote peers are on static IP addresses, a firewall rule blocking UDP port 500 and 4500 can be installed to prevent attackers from sending packets to the pluto IKE daemon. If peers appear on dynamic IP addresses and IKEv1 connections must be supported, then no workarounds are known, and libreswan must be updated or patched.
- Workaroundlibreswan-debugsource-0:4.3-6.el8_4.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.8.4)
If all configured connections are using IKEv2, the IKEv1 subsystem can be disabled by adding the option ikev1-policy=drop to the "config setup" section of ipsec.conf. Alternatively, libreswan can be compiled with USE_IKEv1=false. If all remote peers are on static IP addresses, a firewall rule blocking UDP port 500 and 4500 can be installed to prevent attackers from sending packets to the pluto IKE daemon. If peers appear on dynamic IP addresses and IKEv1 connections must be supported, then no workarounds are known, and libreswan must be updated or patched.
- Workaroundlibreswan-debugsource-0:4.3-6.el8_4.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.8.4)
If all configured connections are using IKEv2, the IKEv1 subsystem can be disabled by adding the option ikev1-policy=drop to the "config setup" section of ipsec.conf. Alternatively, libreswan can be compiled with USE_IKEv1=false. If all remote peers are on static IP addresses, a firewall rule blocking UDP port 500 and 4500 can be installed to prevent attackers from sending packets to the pluto IKE daemon. If peers appear on dynamic IP addresses and IKEv1 connections must be supported, then no workarounds are known, and libreswan must be updated or patched.
- Workaroundlibreswan-debugsource-0:4.3-6.el8_4.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.8.4)
If all configured connections are using IKEv2, the IKEv1 subsystem can be disabled by adding the option ikev1-policy=drop to the "config setup" section of ipsec.conf. Alternatively, libreswan can be compiled with USE_IKEv1=false. If all remote peers are on static IP addresses, a firewall rule blocking UDP port 500 and 4500 can be installed to prevent attackers from sending packets to the pluto IKE daemon. If peers appear on dynamic IP addresses and IKEv1 connections must be supported, then no workarounds are known, and libreswan must be updated or patched.
Advisories like this name the exposed products attackers go after on your perimeter. See what is exposed on your perimeter with a free passive scan.
Free scan