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Gentoo Linux Security Advisory GLSA 201811-03 |
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https://security.gentoo.org/ |
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Severity: Normal |
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Title: OpenSSL: Denial of Service |
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Date: November 09, 2018 |
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Bugs: #663654 |
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ID: 201811-03 |
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Synopsis |
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======== |
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|
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A vulnerability in OpenSSL might allow remote attackers to cause a |
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Denial of Service condition. |
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Background |
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========== |
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OpenSSL is an Open Source toolkit implementing the Secure Sockets Layer |
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(SSL v2/v3) and Transport Layer Security (TLS v1) as well as a general |
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purpose cryptography library. |
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 dev-libs/openssl < 1.0.2o-r6 >= 1.0.2o-r6 |
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Description |
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=========== |
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It was discovered that OpenSSL allow malicious servers to send very |
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large primes to a client during DH(E) based TLS handshakes. |
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Impact |
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====== |
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A remote attacker, by sending large prime to client during DH(E) TLS |
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handshake, could possibly cause a Denial of Service condition. |
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Workaround |
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========== |
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There is no known workaround at this time. |
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Resolution |
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========== |
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All OpenSSL users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=dev-libs/openssl-1.0.2o-r6" |
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|
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References |
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========== |
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[ 1 ] CVE-2018-0732 |
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https://nvd.nist.gov/vuln/detail/CVE-2018-0732 |
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Availability |
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============ |
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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https://security.gentoo.org/glsa/201811-03 |
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Concerns? |
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========= |
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users' machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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https://bugs.gentoo.org. |
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License |
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======= |
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Copyright 2018 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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https://creativecommons.org/licenses/by-sa/2.5 |
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