openSUSE Security Update: Security update for compat-openssl098
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Announcement ID: openSUSE-SU-2018:2695-1
Rating: moderate
References: #1087102 #1089039 #1097158 #1097624 #1098592

Cross-References: CVE-2018-0732 CVE-2018-0737 CVE-2018-0739

Affected Products:
openSUSE Leap 42.3
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An update that solves three vulnerabilities and has two
fixes is now available.

Description:

This update for compat-openssl098 fixes the following security issues:

– CVE-2018-0732: During key agreement in a TLS handshake using a DH(E)
based ciphersuite a malicious server could have sent a very large prime
value to the client. This caused the client to spend an unreasonably
long period of time generating a key for this prime resulting in a hang
until the client has finished. This could be exploited in a Denial Of
Service attack (bsc#1097158)
– Blinding enhancements for ECDSA and DSA (bsc#1097624, bsc#1098592)
– CVE-2018-0737: The RSA Key generation algorithm has been shown to be
vulnerable to a cache timing side channel attack. An attacker with
sufficient access to mount cache timing attacks during the RSA key
generation process could have recovered the private key (bsc#1089039)
– CVE-2018-0739: Constructed ASN.1 types with a recursive definition (such
as can be found in PKCS7) could eventually exceed the stack given
malicious input with excessive recursion. This could have resulted in
DoS (bsc#1087102).

This update was imported from the SUSE:SLE-12:Update update project.

Patch Instructions:

To install this openSUSE Security Update use the SUSE recommended installation methods
like YaST online_update or “zypper patch”.

Alternatively you can run the command listed for your product:

– openSUSE Leap 42.3:

zypper in -t patch openSUSE-2018-997=1

Package List:

– openSUSE Leap 42.3 (i586 x86_64):

compat-openssl098-debugsource-0.9.8j-24.1
libopenssl0_9_8-0.9.8j-24.1
libopenssl0_9_8-debuginfo-0.9.8j-24.1

– openSUSE Leap 42.3 (x86_64):

libopenssl0_9_8-32bit-0.9.8j-24.1
libopenssl0_9_8-debuginfo-32bit-0.9.8j-24.1

References:

https://www.suse.com/security/cve/CVE-2018-0732.html
https://www.suse.com/security/cve/CVE-2018-0737.html
https://www.suse.com/security/cve/CVE-2018-0739.html
https://bugzilla.suse.com/1087102
https://bugzilla.suse.com/1089039
https://bugzilla.suse.com/1097158
https://bugzilla.suse.com/1097624
https://bugzilla.suse.com/1098592

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