drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Preisgabe von Informationen in libressl
Name: |
Preisgabe von Informationen in libressl |
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ID: |
openSUSE-SU-2018:2592-1 |
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Distribution: |
SUSE |
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Plattformen: |
openSUSE Leap 15.0 |
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Datum: |
Mo, 3. September 2018, 16:36 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12434 |
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Applikationen: |
LibreSSL |
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Originalnachricht |
openSUSE Security Update: Security update for libressl ______________________________________________________________________________
Announcement ID: openSUSE-SU-2018:2592-1 Rating: moderate References: #1097779 Cross-References: CVE-2018-12434 Affected Products: openSUSE Leap 15.0 ______________________________________________________________________________
An update that fixes one vulnerability is now available.
Description:
This update for libressl to version 2.8.0 fixes the following issues:
Security issues fixed:
- CVE-2018-12434: Avoid a timing side-channel leak when generating DSA and ECDSA signatures. (boo#1097779) - Reject excessively large primes in DH key generation.
Other bugs fixed:
- Fixed a pair of 20+ year-old bugs in X509_NAME_add_entry. - Tighten up checks for various X509_VERIFY_PARAM functions, 'poisoning' parameters so that an unverified certificate cannot be used if it fails verification. - Fixed a potential memory leak on failure in ASN1_item_digest. - Fixed a potential memory alignment crash in asn1_item_combine_free. - Removed unused SSL3_FLAGS_DELAY_CLIENT_FINISHED and SSL3_FLAGS_POP_BUFFER flags in write path, simplifying IO paths. - Removed SSL_OP_TLS_ROLLBACK_BUG buggy client workarounds. - Added const annotations to many existing APIs from OpenSSL, making interoperability easier for downstream applications. - Added a missing bounds check in c2i_ASN1_BIT_STRING. - Removed three remaining single DES cipher suites. - Fixed a potential leak/incorrect return value in DSA signature generation. - Added a blinding value when generating DSA and ECDSA signatures, in order to reduce the possibility of a side-channel attack leaking the private key. - Added ECC constant time scalar multiplication support. - Revised the implementation of RSASSA-PKCS1-v1_5 to match the specification in RFC 8017.
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 15.0:
zypper in -t patch openSUSE-2018-950=1
Package List:
- openSUSE Leap 15.0 (i586 x86_64):
libcrypto43-2.8.0-lp150.2.3.1 libcrypto43-debuginfo-2.8.0-lp150.2.3.1 libressl-2.8.0-lp150.2.3.1 libressl-debuginfo-2.8.0-lp150.2.3.1 libressl-debugsource-2.8.0-lp150.2.3.1 libressl-devel-2.8.0-lp150.2.3.1 libssl45-2.8.0-lp150.2.3.1 libssl45-debuginfo-2.8.0-lp150.2.3.1 libtls17-2.8.0-lp150.2.3.1 libtls17-debuginfo-2.8.0-lp150.2.3.1
- openSUSE Leap 15.0 (noarch):
libressl-devel-doc-2.8.0-lp150.2.3.1
- openSUSE Leap 15.0 (x86_64):
libcrypto43-32bit-2.8.0-lp150.2.3.1 libcrypto43-32bit-debuginfo-2.8.0-lp150.2.3.1 libressl-devel-32bit-2.8.0-lp150.2.3.1 libssl45-32bit-2.8.0-lp150.2.3.1 libssl45-32bit-debuginfo-2.8.0-lp150.2.3.1 libtls17-32bit-2.8.0-lp150.2.3.1 libtls17-32bit-debuginfo-2.8.0-lp150.2.3.1
References:
https://www.suse.com/security/cve/CVE-2018-12434.html https://bugzilla.suse.com/1097779
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