drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Denial of Service in Libreswan
Name: |
Denial of Service in Libreswan |
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ID: |
202007-21 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
Di, 28. Juli 2020, 07:03 |
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Referenzen: |
https://nvd.nist.gov/vuln/detail/CVE-2020-1763 |
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Applikationen: |
Libreswan |
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Originalnachricht |
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 202007-21 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal Title: Libreswan: Denial of service Date: July 27, 2020 Bugs: #722696 ID: 202007-21
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Synopsis ========
A vulnerability in Libreswan could lead to a Denial of Service condition.
Background ==========
Libreswan is a free software implementation of the most widely supported and standarized VPN protocol based on (âIPsecâ) and the Internet Key Exchange (âIKEâ).
Affected packages =================
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-vpn/libreswan < 3.32 >= 3.32
Description ===========
As a result of a bug in handling certain bogus encrypted IKEv1, while building a log message that the packet has been dropped, a NULL pointer dereference causes Libreswan to crash and restart when it attempts to log the state name involved.
Impact ======
An attacker could cause a possible Denial of Service condition.
Workaround ==========
There is no known workaround at this time.
Resolution ==========
All Libreswan users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-vpn/libreswan-3.32"
References ==========
[ 1 ] CVE-2020-1763 https://nvd.nist.gov/vuln/detail/CVE-2020-1763
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
https://security.gentoo.org/glsa/202007-21
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
--Apple-MailóCCCB775-AF60-45F5-8B5E-77D92145DDE9 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8
<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; = charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; = -webkit-nbsp-mode: space; line-break: after-white-space;" class=3D""><pre = style=3D"word-wrap: break-word; white-space: pre-wrap;" class=3D"">- - - = - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 202007-21 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - <a = href=3D"https://security.gentoo.org/" = class=3D"">https://security.gentoo.org/</a> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal Title: Libreswan: Denial of service Date: July 27, 2020 Bugs: #722696 ID: 202007-21
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Synopsis =3D=3D=3D=3D=3D=3D=3D=3D
A vulnerability in Libreswan could lead to a Denial of Service condition.
Background =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
Libreswan is a free software implementation of the most widely supported and standarized VPN protocol based on (=E2=80=9CIPsec=E2=80=9D) = and the Internet Key Exchange (=E2=80=9CIKE=E2=80=9D).
Affected packages =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-vpn/libreswan < 3.32 >=3D = 3.32=20
Description =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
As a result of a bug in handling certain bogus encrypted IKEv1, while building a log message that the packet has been dropped, a NULL pointer dereference causes Libreswan to crash and restart when it attempts to log the state name involved.
Impact =3D=3D=3D=3D=3D=3D
An attacker could cause a possible Denial of Service condition.
Workaround =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
There is no known workaround at this time.
Resolution =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
All Libreswan users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=3Dnet-vpn/libreswan-3.32"
References =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
[ 1 ] CVE-2020-1763 <a href=3D"https://nvd.nist.gov/vuln/detail/CVE-2020-1763" = class=3D"">https://nvd.nist.gov/vuln/detail/CVE-2020-1763</a>
Availability =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
<a href=3D"https://security.gentoo.org/glsa/202007-21" = class=3D"">https://security.gentoo.org/glsa/202007-21</a>
Concerns? =3D=3D=3D=3D=3D=3D=3D=3D=3D
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 <a href=3D"mailto:security@gentoo.org" class=3D"">security@gentoo.org</a> = or alternatively, you may file a bug at <a href=3D"https://bugs.gentoo.org" = class=3D"">https://bugs.gentoo.org</a>.
License =3D=3D=3D=3D=3D=3D=3D
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.
<a href=3D"https://creativecommons.org/licenses/by-sa/2.5" = class=3D"">https://creativecommons.org/licenses/by-sa/2.5</a></pre><div = class=3D""><br class=3D""></div></body></html>=
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