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CVE-2019-1551

Status Candidate

Overview

There is an overflow bug in the x64_64 Montgomery squaring procedure used in exponentiation with 512-bit moduli. No EC algorithms are affected. Analysis suggests that attacks against 2-prime RSA1024, 3-prime RSA1536, and DSA1024 as a result of this defect would be very difficult to perform and are not believed likely. Attacks against DH512 are considered just feasible. However, for an attack the target would have to re-use the DH512 private key, which is not recommended anyway. Also applications directly using the low level API BN_mod_exp may be affected if they use BN_FLG_CONSTTIME. Fixed in OpenSSL 1.1.1e (Affected 1.1.1-1.1.1d). Fixed in OpenSSL 1.0.2u (Affected 1.0.2-1.0.2t).

Related Files

Debian Security Advisory 4855-1
Posted Feb 28, 2021
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4855-1 - Multiple vulnerabilities have been discovered in OpenSSL, a Secure Sockets Layer toolkit. An overflow bug in the x64_64 Montgomery squaring procedure, an integer overflow in CipherUpdate and a NULL pointer dereference flaw X509_issuer_and_serial_hash() were found, which could result in denial of service.

tags | advisory, denial of service, overflow, vulnerability
systems | linux, debian
advisories | CVE-2019-1551, CVE-2021-23840, CVE-2021-23841
SHA-256 | 97d32585c37fd8006093ec57a2913bfc6ae8b85626eb395c01aae4dc59e6947a
Red Hat Security Advisory 2021-0436-01
Posted Feb 16, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0436-01 - Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. The compliance-operator image updates are now available for OpenShift Container Platform 4.6. This advisory provides the following updates among others: Enhances profile parsing time. Fixes excessive resource consumption from the Operator. Fixes default content image. Fixes outdated remediation handling.

tags | advisory
systems | linux, redhat
advisories | CVE-2018-20843, CVE-2019-11068, CVE-2019-13050, CVE-2019-13627, CVE-2019-14889, CVE-2019-15165, CVE-2019-1551, CVE-2019-15903, CVE-2019-16168, CVE-2019-16935, CVE-2019-18197, CVE-2019-19221, CVE-2019-19906, CVE-2019-19956, CVE-2019-20218, CVE-2019-20386, CVE-2019-20387, CVE-2019-20388, CVE-2019-20454, CVE-2019-20807, CVE-2019-20907, CVE-2019-20916, CVE-2019-5018, CVE-2019-8625, CVE-2019-8710, CVE-2019-8720, CVE-2019-8743
SHA-256 | 0d991d0f7e88d36db03aa4ec1666ccd474727a461e4af460a0e41379046f1895
Red Hat Security Advisory 2021-0190-01
Posted Jan 19, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-0190-01 - Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. The compliance-operator image updates are now available for OpenShift Container Platform 4.6. Issues addressed include denial of service and integer overflow vulnerabilities.

tags | advisory, denial of service, overflow, vulnerability
systems | linux, redhat
advisories | CVE-2018-20843, CVE-2019-11068, CVE-2019-13050, CVE-2019-13627, CVE-2019-14889, CVE-2019-15165, CVE-2019-1551, CVE-2019-15903, CVE-2019-16168, CVE-2019-16935, CVE-2019-17450, CVE-2019-18197, CVE-2019-19221, CVE-2019-19906, CVE-2019-19956, CVE-2019-20218, CVE-2019-20387, CVE-2019-20388, CVE-2019-20454, CVE-2019-20807, CVE-2019-20907, CVE-2019-20916, CVE-2019-5018, CVE-2019-8625, CVE-2019-8710, CVE-2019-8720, CVE-2019-8743
SHA-256 | 81e21281b29f4709c67e5afd6ec796ea32d2e06e855e62525561f568a68daf0e
Red Hat Security Advisory 2020-5149-01
Posted Nov 18, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-5149-01 - Red Hat OpenShift Serverless 1.11.0 is a generally available release of the OpenShift Serverless Operator. This version of the OpenShift Serverless Operator is supported on Red Hat OpenShift Container Platform version 4.6.

tags | advisory
systems | linux, redhat
advisories | CVE-2018-20843, CVE-2019-13050, CVE-2019-13627, CVE-2019-14889, CVE-2019-1551, CVE-2019-15903, CVE-2019-16168, CVE-2019-16935, CVE-2019-19221, CVE-2019-19906, CVE-2019-19956, CVE-2019-20218, CVE-2019-20387, CVE-2019-20388, CVE-2019-20454, CVE-2019-20907, CVE-2019-20916, CVE-2019-5018, CVE-2020-10029, CVE-2020-13630, CVE-2020-13631, CVE-2020-13632, CVE-2020-14040, CVE-2020-14422, CVE-2020-1730, CVE-2020-1751, CVE-2020-1752
SHA-256 | ae040d80529f54eb92eb0fd38e2a45abadc228521f0e608f7b65bb3d75caee9c
Red Hat Security Advisory 2020-4514-01
Posted Nov 4, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-4514-01 - 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 integer overflow vulnerability.

tags | advisory, overflow, protocol
systems | linux, redhat
advisories | CVE-2019-1551
SHA-256 | 57d0438c9dc46fc2d5dde2278d24cb1e1406498fdbe4406b7947934429365f0c
Red Hat Security Advisory 2020-4384-01
Posted Oct 28, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-4384-01 - This release adds the new Apache HTTP Server 2.4.37 Service Pack 5 packages that are part of the JBoss Core Services offering. This release serves as a replacement for Red Hat JBoss Core Services Pack Apache Server 2.4.37 Service Pack 3 and includes bug fixes and enhancements. Issues addressed include buffer overflow and integer overflow vulnerabilities.

tags | advisory, web, overflow, vulnerability
systems | linux, redhat
advisories | CVE-2019-1551, CVE-2019-5435, CVE-2020-11984, CVE-2020-11993
SHA-256 | 467d98d3dc3e453dab213eac2a788f9c54641adf327662b50e225048b78e03a6
Red Hat Security Advisory 2020-4383-01
Posted Oct 28, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-4383-01 - Red Hat JBoss Core Services is a set of supplementary software for Red Hat JBoss middleware products. This software, such as Apache HTTP Server, is common to multiple JBoss middleware products, and is packaged under Red Hat JBoss Core Services to allow for faster distribution of updates, and for a more consistent update experience. This release adds the new Apache HTTP Server 2.4.37 Service Pack 5 packages that are part of the JBoss Core Services offering. This release serves as a replacement for Red Hat JBoss Core Services Pack Apache Server 2.4.37 Service Pack 4 and includes bug fixes and enhancements. Issues addressed include buffer overflow and integer overflow vulnerabilities.

tags | advisory, web, overflow, vulnerability
systems | linux, redhat
advisories | CVE-2019-1551, CVE-2019-5435, CVE-2020-11984, CVE-2020-11993
SHA-256 | e3fa177914caddbd671a91d6b248da680b85881080ad1c62d8b0d466e506ead0
Ubuntu Security Notice USN-4504-1
Posted Sep 16, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4504-1 - Robert Merget, Marcus Brinkmann, Nimrod Aviram, and Juraj Somorovsky discovered that certain Diffie-Hellman ciphersuites in the TLS specification and implemented by OpenSSL contained a flaw. A remote attacker could possibly use this issue to eavesdrop on encrypted communications. This was fixed in this update by removing the insecure ciphersuites from OpenSSL. Cesar Pereida GarcĂ­a, Sohaib ul Hassan, Nicola Tuveri, Iaroslav Gridin, Alejandro Cabrera Aldaya, and Billy Brumley discovered that OpenSSL incorrectly handled ECDSA signatures. An attacker could possibly use this issue to perform a timing side-channel attack and recover private ECDSA keys. This issue only affected Ubuntu 18.04 LTS. Various other issues were also addressed.

tags | advisory, remote
systems | linux, ubuntu
advisories | CVE-2019-1547, CVE-2019-1551, CVE-2019-1563, CVE-2020-1968
SHA-256 | a453c91247c0c8b05f0a70b1a3674ee04e7e21eea70c71f8885d6de34ed4c9a3
Ubuntu Security Notice USN-4376-1
Posted May 28, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4376-1 - It was discovered that OpenSSL incorrectly handled ECDSA signatures. An attacker could possibly use this issue to perform a timing side-channel attack and recover private ECDSA keys. Matt Caswell discovered that OpenSSL incorrectly handled the random number generator. This may result in applications that use the fork system call sharing the same RNG state between the parent and the child, contrary to expectations. This issue only affected Ubuntu 18.04 LTS and Ubuntu 19.10.

tags | advisory
systems | linux, ubuntu
advisories | CVE-2019-1547, CVE-2019-1549, CVE-2019-1551, CVE-2019-1563
SHA-256 | e20de866e28c83e8f20de501782e4da4bf3f8fcaa6fcfbdc5b5e842700cd1f27
Gentoo Linux Security Advisory 202004-10
Posted Apr 23, 2020
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202004-10 - Multiple vulnerabilities were found in OpenSSL, the worst of which could allow remote attackers to cause a Denial of Service condition. Versions less than 1.1.1g are affected.

tags | advisory, remote, denial of service, vulnerability
systems | linux, gentoo
advisories | CVE-2019-1551, CVE-2020-1967
SHA-256 | cfc7883a72f8c1a583810a4b13173d4ababf1b9c76a9e8e974ff8e85bc52af2e
Debian Security Advisory 4594-1
Posted Dec 30, 2019
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4594-1 - Guido Vranken discovered an overflow bug in the x64_64 Montgomery squaring procedure used in exponentiation with 512-bit moduli.

tags | advisory, overflow
systems | linux, debian
advisories | CVE-2019-1551
SHA-256 | a39d0cc9a81c74129e5f00871afb245984b1984fc1e3bd6c3edaaa4475432379
Slackware Security Advisory - openssl Updates
Posted Dec 26, 2019
Authored by Slackware Security Team | Site slackware.com

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

tags | advisory
systems | linux, slackware
advisories | CVE-2019-1551
SHA-256 | ac183b8e752e5f00b1fc5cc6180eb2594a11d4d02915f3992ca665a26a46e860
OpenSSL Security Advisory 20191206
Posted Dec 6, 2019
Site openssl.org

OpenSSL Security Advisory 20191206 - There is an overflow bug in the x64_64 Montgomery squaring procedure used in exponentiation with 512-bit moduli. No EC algorithms are affected. Analysis suggests that attacks against 2-prime RSA1024, 3-prime RSA1536, and DSA1024 as a result of this defect would be very difficult to perform and are not believed likely. Attacks against DH512 are considered just feasible. However, for an attack the target would have to re-use the DH512 private key, which is not recommended anyway. Also applications directly using the low level API BN_mod_exp may be affected if they use BN_FLG_CONSTTIME.

tags | advisory, overflow
advisories | CVE-2019-1551
SHA-256 | 161cc8530c92bc02fac2a71dc79ca3638bbfaa2a59eb49517b1f72fbf38ae5e3
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