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Sicherheit: Denial of Service in openssl-1_1
Aktuelle Meldungen Distributionen
Name: Denial of Service in openssl-1_1
ID: SUSE-SU-2018:2956-1
Distribution: SUSE
Plattformen: SUSE Linux Enterprise Module for Basesystem 15
Datum: So, 30. September 2018, 20:49
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-0732
Applikationen: OpenSSL

Originalnachricht

   SUSE Security Update: Security update for openssl-1_1
______________________________________________________________________________

Announcement ID: SUSE-SU-2018:2956-1
Rating: moderate
References: #1097158 #1101470
Cross-References: CVE-2018-0732
Affected Products:
SUSE Linux Enterprise Module for Basesystem 15
______________________________________________________________________________

An update that solves one vulnerability and has one errata
is now available.

Description:

This update for openssl-1_1 to 1.1.0i fixes the following issues:

These security issues were fixed:

- 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)
- Make problematic ECDSA sign addition length-invariant
- Add blinding to ECDSA and DSA signatures to protect against side channel
attacks

These non-security issues were fixed:

- When unlocking a pass phrase protected PEM file or PKCS#8 container, we
now allow empty (zero character) pass phrases.
- Certificate time validation (X509_cmp_time) enforces stricter compliance
with RFC 5280. Fractional seconds and timezone offsets are no longer
allowed.
- Fixed a text canonicalisation bug in CMS
- Add openssl(cli) Provide so the packages that require the openssl binary
can require this instead of the new openssl meta package (bsc#1101470)


Patch Instructions:

To install this SUSE 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:

- SUSE Linux Enterprise Module for Basesystem 15:

zypper in -t patch SUSE-SLE-Module-Basesystem-15-2018-2083=1



Package List:

- SUSE Linux Enterprise Module for Basesystem 15 (aarch64 ppc64le s390x
x86_64):

libopenssl-1_1-devel-1.1.0i-4.9.2
libopenssl1_1-1.1.0i-4.9.2
libopenssl1_1-debuginfo-1.1.0i-4.9.2
libopenssl1_1-hmac-1.1.0i-4.9.2
openssl-1_1-1.1.0i-4.9.2
openssl-1_1-debuginfo-1.1.0i-4.9.2
openssl-1_1-debugsource-1.1.0i-4.9.2

- SUSE Linux Enterprise Module for Basesystem 15 (noarch):

libopenssl-devel-1.1.0i-3.3.1
openssl-1.1.0i-3.3.1

- SUSE Linux Enterprise Module for Basesystem 15 (x86_64):

libopenssl1_1-32bit-1.1.0i-4.9.2
libopenssl1_1-32bit-debuginfo-1.1.0i-4.9.2
libopenssl1_1-hmac-32bit-1.1.0i-4.9.2


References:

https://www.suse.com/security/cve/CVE-2018-0732.html
https://bugzilla.suse.com/1097158
https://bugzilla.suse.com/1101470

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