Title: strongSwan IKE Request Multiple Remote Denial Of Service Vulnerabilities
Severity: MODERATE
Description:
strongSwan is an open-source implementation of an IPSec VPN for Linux.
Since it fails to properly handle certain IKE packets, the application is prone to multiple remote denial-of-service vulnerabilities:
1. If the IKEv2 charon daemon receives a CREATE_CHILD_SA request following a malformed IKE_SA_INIT request, the process will crash because of a NULL-pointer exception.
2. The IKEv2 charon daemon will crash because of a NULL-pointer exception when processing malformed IKE_AUTH requests missing either the TSi or TSr traffic selector payload. This issue stems from an error in the ordering of NULL-pointer checks for these fields.
Attackers can exploit these issue to crash the IKEv2 charon daemon, denying access to legitimate users.
Versions prior to strongSwan 4.3.1 and 4.2.15 are vulnerable.
Affected Products:
- Debian Linux 4.0
- Debian Linux 4.0 alpha
- Debian Linux 4.0 amd64
- Debian Linux 4.0 arm
- Debian Linux 4.0 armel
- Debian Linux 4.0 hppa
- Debian Linux 4.0 ia-32
- Debian Linux 4.0 ia-64
- Debian Linux 4.0 m68k
- Debian Linux 4.0 mips
- Debian Linux 4.0 mipsel
- Debian Linux 4.0 powerpc
- Debian Linux 4.0 s/390
- Debian Linux 4.0 sparc
- Debian Linux 5.0
- Debian Linux 5.0 alpha
- Debian Linux 5.0 amd64
- Debian Linux 5.0 arm
- Debian Linux 5.0 armel
- Debian Linux 5.0 hppa
- Debian Linux 5.0 ia-32
- Debian Linux 5.0 ia-64
- Debian Linux 5.0 m68k
- Debian Linux 5.0 mips
- Debian Linux 5.0 mipsel
- Debian Linux 5.0 powerpc
- Debian Linux 5.0 s/390
- Debian Linux 5.0 sparc
- Linux kernel 2.6.5
- S.u.S.E. Linux Enterprise Desktop 10 SP1
- S.u.S.E. Linux Enterprise Desktop 10 SP2
- S.u.S.E. Linux Enterprise Desktop 10 SP2
- S.u.S.E. Linux Enterprise Server 10
- S.u.S.E. Linux Enterprise Server 10.SP1
- S.u.S.E. Linux Enterprise Server 10.SP2 SP
- S.u.S.E. Linux Enterprise Server 9
- S.u.S.E. Linux Enterprise Server 9-SP3
- S.u.S.E. SUSE Linux Enterprise 10 SP1 DEBUGINFO
- S.u.S.E. SUSE Linux Enterprise 10 SP1 DEBUGINFO
- S.u.S.E. SUSE Linux Enterprise 10 SP2 DEBUGINFO
- S.u.S.E. SUSE Linux Enterprise Desktop 10
- S.u.S.E. SUSE Linux Enterprise Desktop 10 SP1
- S.u.S.E. SUSE Linux Enterprise Desktop 10 SP2
- S.u.S.E. SUSE Linux Enterprise Server 10
- S.u.S.E. SUSE Linux Enterprise Server 10 SP1
- S.u.S.E. SUSE Linux Enterprise Server 10 SP2
- S.u.S.E. SUSE Linux Enterprise Server 11
- S.u.S.E. SUSE Linux Enterprise Server 9
- S.u.S.E. SUSE Linux Enterprise Server 9 SP3
- S.u.S.E. SUSE Linux Enterprise Server RT Solution 10
- S.u.S.E. openSUSE 10.3
- S.u.S.E. openSUSE 11.0
- S.u.S.E. openSUSE 11.1
- strongSwan strongSwan 4.1.0
- strongSwan strongSwan 4.2.13
- strongSwan strongSwan 4.2.14
- strongSwan strongSwan 4.2.6
- strongSwan strongSwan 4.2.7
- strongSwan strongSwan 4.3.0
References:
- Andreas Steffen andreas.steffen at strongswan.org: [strongSwan] ANNOUNCE: strongSwan 4.3.1 and 4.2.15 released
- strongSwan: Index of /patches/03_invalid_ike_state_patch
- strongSwan: Index of /patches/04_swapped_ts_check_patch
- strongSwan: strongSwan Homepage
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