Debian update for strongswan



Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2018-5388
CVE-2018-10811
CWE-ID CWE-124
CWE-119
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Debian Linux
Operating systems & Components / Operating system

Vendor Debian

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Buffer underflow

EUVDB-ID: #VU13024

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-5388

CWE-ID: CWE-124 - Buffer Underwrite ('Buffer Underflow')

Exploit availability: No

Description

The vulnerability allows a local attacker to cause DoS condition on the target system.

The vulnerability exists due to buffer underflow stroke_socket.c while improper checking of packet length. A local attacker can submit specially crafted packets, trigger resource exhaustion and cause the service to crash while reading from the socket.

Mitigation

Update the affected package to version: 5.2.1-6+deb8u6, 5.5.1-4+deb9u2

Vulnerable software versions

Debian Linux: All versions

CPE2.3 External links

https://www.debian.org/security/2018/dsa-4229


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Memory corruption

EUVDB-ID: #VU13125

Risk: Low

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-10811

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The vulnerability exists in the Internet Key Exchange Version 2 (IKEv2) key derivation of strongSwan due to insufficient initialization of the variable that stores the SKEYSEED for IKEv2 key derivation before using the negotiated pseudorandom function (PRF). A remote attacker can trigger a key derivation failure and cause the affected software to clear the uninitialized memory that may lead to crash.

Mitigation

Update the affected package to version: 5.2.1-6+deb8u6, 5.5.1-4+deb9u2

Vulnerable software versions

Debian Linux: All versions

CPE2.3 External links

https://www.debian.org/security/2018/dsa-4229


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



###SIDEBAR###