drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Denial of Service in libssh
Name: |
Denial of Service in libssh |
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ID: |
202004-08 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
Sa, 11. April 2020, 08:01 |
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Referenzen: |
https://nvd.nist.gov/vuln/detail/CVE-2020-1730 |
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Applikationen: |
libssh |
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Originalnachricht |
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 202004-08 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Low Title: libssh: Denial of Service Date: April 10, 2020 Bugs: #716788 ID: 202004-08
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Synopsis ========
A vulnerability in libssh could allow a remote attacker to cause a Denial of Service condition.
Background ==========
libssh is a multiplatform C library implementing the SSHv2 protocol on client and server side.
Affected packages =================
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-libs/libssh < 0.9.4 >= 0.9.4
Description ===========
It was discovered that libssh could crash when AES-CTR ciphers are used.
Impact ======
A remote attacker running a malicious client or server could possibly crash the counterpart implemented with libssh and cause a Denial of Service condition.
Workaround ==========
Disable AES-CTR ciphers. If you implement a server using libssh it is recommended to use a prefork model so each session runs in an own process.
Resolution ==========
All libssh users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-libs/libssh-0.9.4"
References ==========
[ 1 ] CVE-2020-1730 https://nvd.nist.gov/vuln/detail/CVE-2020-1730
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
https://security.gentoo.org/glsa/202004-08
Concerns? =========
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
License =======
Copyright 2020 Gentoo Foundation, Inc; referenced text belongs to its owner(s).
The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.
https://creativecommons.org/licenses/by-sa/2.5
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