drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Zahlenüberlauf in OCaml
Name: |
Zahlenüberlauf in OCaml |
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ID: |
201702-15 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
Di, 21. Februar 2017, 07:21 |
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Referenzen: |
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8869 |
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Applikationen: |
Objective Caml |
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Originalnachricht |
This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --ahUGJxQPudmgphrUWChDtJdU9QXeR1wxl Content-Type: multipart/mixed; boundary="ownSC90dVXlIR240FcOu5x0CQomKdMqLS"; protected-headers="v1" From: Thomas Deutschmann <whissi@gentoo.org> Reply-To: security@gentoo.org To: gentoo-announce@lists.gentoo.org Message-ID: <5d4e214a-a8fa-fbf3-2a48-e160bfef187e@gentoo.org> Subject: [ GLSA 201702-15 ] OCaml: Buffer overflow and information disclosure
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201702-15 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal Title: OCaml: Buffer overflow and information disclosure Date: February 20, 2017 Bugs: #581946 ID: 201702-15
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Synopsis ========
A buffer overflow in OCaml might allow remote attackers to obtain sensitive information or crash an OCaml-based application.
Background ==========
OCaml is a high-level, strongly-typed, functional, and object-oriented programming language from the ML family of languages.
Affected packages =================
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-lang/ocaml < 4.04.0 >= 4.04.0
Description ===========
It was discovered that OCaml was vulnerable to a runtime bug that, on 64-bit platforms, causes size arguments to internal memmove calls to be sign-extended from 32- to 64-bits before being passed to the memmove function. This leads to arguments between 2GiB and 4GiB being interpreted as larger than they are (specifically, a bit below 2^64), causing a buffer overflow. Further, arguments between 4GiB and 6GiB are interpreted as 4GiB smaller than they should be causing a possible information leak.
Impact ======
A remote attacker, able to interact with an OCaml-based application, could possibly obtain sensitive information or cause a Denial of Service condition.
Workaround ==========
There is no known workaround at this time.
Resolution ==========
All OCaml users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=dev-lang/ocam-4.04.0"
Packages which depend on OCaml may need to be recompiled. Tools such as qdepends (included in app-portage/portage-utils) may assist in identifying these packages:
# emerge -1 -a -v $(qdepends -CQ dev-lang/ocaml | sed 's/^/=/')
References ==========
[ 1 ] CVE-2015-8869 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8869
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
https://security.gentoo.org/glsa/201702-15
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 2017 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.
http://creativecommons.org/licenses/by-sa/2.5
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