Twenty Year Anniversary
Showing 1 - 7 of 7 RSS Feed

CVE-2017-3738

Status Candidate

Overview

There is an overflow bug in the AVX2 Montgomery multiplication procedure used in exponentiation with 1024-bit moduli. No EC algorithms are affected. Analysis suggests that attacks against RSA and DSA as a result of this defect would be very difficult to perform and are not believed likely. Attacks against DH1024 are considered just feasible, because most of the work necessary to deduce information about a private key may be performed offline. The amount of resources required for such an attack would be significant. However, for an attack on TLS to be meaningful, the server would have to share the DH1024 private key among multiple clients, which is no longer an option since CVE-2016-0701. This only affects processors that support the AVX2 but not ADX extensions like Intel Haswell (4th generation). Note: The impact from this issue is similar to CVE-2017-3736, CVE-2017-3732 and CVE-2015-3193. OpenSSL version 1.0.2-1.0.2m and 1.1.0-1.1.0g are affected. Fixed in OpenSSL 1.0.2n. Due to the low severity of this issue we are not issuing a new release of OpenSSL 1.1.0 at this time. The fix will be included in OpenSSL 1.1.0h when it becomes available. The fix is also available in commit e502cc86d in the OpenSSL git repository.

Related Files

Red Hat Security Advisory 2018-0998-01
Posted Apr 11, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-0998-01 - OpenSSL is a toolkit that implements the Secure Sockets Layer and Transport Layer Security protocols, as well as a full-strength general-purpose cryptography library. Issues addressed include an overflow issue.

tags | advisory, overflow, protocol
systems | linux, redhat
advisories | CVE-2017-3736, CVE-2017-3737, CVE-2017-3738
MD5 | 0460d02f78c5236ec33d13a700d9ec15
Debian Security Advisory 4157-1
Posted Mar 30, 2018
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4157-1 - Multiple vulnerabilities have been discovered in OpenSSL, a Secure Sockets Layer toolkit.

tags | advisory, vulnerability
systems | linux, debian
advisories | CVE-2017-3738, CVE-2018-0739
MD5 | 5983e5ea100d06ba1385d6480f4e7b75
Gentoo Linux Security Advisory 201712-03
Posted Dec 15, 2017
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201712-3 - Multiple vulnerabilities have been found in OpenSSL, the worst of which may lead to a Denial of Service condition. Versions less than 1.0.2n are affected.

tags | advisory, denial of service, vulnerability
systems | linux, gentoo
advisories | CVE-2017-3735, CVE-2017-3736, CVE-2017-3737, CVE-2017-3738
MD5 | 424fb2f54f934bbdb186d90e169c3306
Ubuntu Security Notice USN-3512-1
Posted Dec 12, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3512-1 - David Benjamin discovered that OpenSSL did not correctly prevent buggy applications that ignore handshake errors from subsequently calling certain functions. It was discovered that OpenSSL incorrectly performed the x86_64 Montgomery multiplication procedure. While unlikely, a remote attacker could possibly use this issue to recover private keys.

tags | advisory, remote
systems | linux, ubuntu
advisories | CVE-2017-3737, CVE-2017-3738
MD5 | 0cc0ee9bc2108ca4e7a6bf8e0410739c
Slackware Security Advisory - openssl Updates
Posted Dec 12, 2017
Authored by Slackware Security Team | Site slackware.com

Slackware Security Advisory - New openssl packages are available for Slackware 14.2 and -current to fix security issues.

tags | advisory
systems | linux, slackware
advisories | CVE-2017-3737, CVE-2017-3738
MD5 | e6e09e7e8a766023e9521e28de89fbdf
FreeBSD Security Advisory - FreeBSD-SA-17:12.openssl
Posted Dec 12, 2017
Site security.freebsd.org

FreeBSD Security Advisory - Invoking SSL_read()/SSL_write() while in an error state causes data to be passed without being decrypted/encrypted directly from the SSL/TLS record layer. In order to exploit this issue an application bug would have to be present that resulted in a call to SSL_read()/SSL_write() being issued after having already received a fatal error. Various other issues were addressed.

tags | advisory
systems | freebsd, bsd
advisories | CVE-2017-3737, CVE-2017-3738
MD5 | 3475ce3c92c45de6eb4652ec337d3e53
OpenSSL Toolkit 1.0.2n
Posted Dec 9, 2017
Site openssl.org

OpenSSL is a robust, fully featured Open Source toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols with full-strength cryptography world-wide.

Changes: Read/write after SSL object in error state addressed. rsaz_1024_mul_avx2 overflow bug on x86_64 addressed. Various other issues address.
tags | tool, encryption, protocol
systems | unix
advisories | CVE-2017-3737, CVE-2017-3738
MD5 | 13bdc1b1d1ff39b6fd42a255e74676a4
Page 1 of 1
Back1Next

Want To Donate?


Bitcoin: 18PFeCVLwpmaBuQqd5xAYZ8bZdvbyEWMmU

File Archive:

May 2018

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    May 1st
    15 Files
  • 2
    May 2nd
    17 Files
  • 3
    May 3rd
    30 Files
  • 4
    May 4th
    29 Files
  • 5
    May 5th
    2 Files
  • 6
    May 6th
    3 Files
  • 7
    May 7th
    13 Files
  • 8
    May 8th
    27 Files
  • 9
    May 9th
    17 Files
  • 10
    May 10th
    15 Files
  • 11
    May 11th
    8 Files
  • 12
    May 12th
    2 Files
  • 13
    May 13th
    8 Files
  • 14
    May 14th
    7 Files
  • 15
    May 15th
    43 Files
  • 16
    May 16th
    19 Files
  • 17
    May 17th
    16 Files
  • 18
    May 18th
    15 Files
  • 19
    May 19th
    3 Files
  • 20
    May 20th
    7 Files
  • 21
    May 21st
    15 Files
  • 22
    May 22nd
    40 Files
  • 23
    May 23rd
    64 Files
  • 24
    May 24th
    55 Files
  • 25
    May 25th
    0 Files
  • 26
    May 26th
    0 Files
  • 27
    May 27th
    0 Files
  • 28
    May 28th
    0 Files
  • 29
    May 29th
    0 Files
  • 30
    May 30th
    0 Files
  • 31
    May 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2018 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close