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CVE-2015-3281

Status Candidate

Overview

The buffer_slow_realign function in HAProxy 1.5.x before 1.5.14 and 1.6-dev does not properly realign a buffer that is used for pending outgoing data, which allows remote attackers to obtain sensitive information (uninitialized memory contents of previous requests) via a crafted request.

Related Files

Red Hat Security Advisory 2015-2666-01
Posted Dec 17, 2015
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2015-2666-01 - OpenShift Enterprise by Red Hat is the company's cloud computing Platform-as-a-Service solution designed for on-premise or private cloud deployments. The following security issue is addressed with this release: An implementation error related to the memory management of request and responses was found within HAProxy's buffer_slow_realign() function. An unauthenticated remote attacker could use this flaw to leak certain memory buffer contents from a past request or session.

tags | advisory, remote
systems | linux, redhat
advisories | CVE-2015-3281
SHA-256 | c4327e8c7d421a0cbc4ff37663cdff357f709ac3ab9cbc77ba10759b1555132d
Red Hat Security Advisory 2015-1741-01
Posted Sep 8, 2015
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2015-1741-01 - HAProxy provides high availability, load balancing, and proxying for TCP and HTTP-based applications. An implementation error related to the memory management of request and responses was found within HAProxy's buffer_slow_realign() function. An unauthenticated remote attacker could possibly use this flaw to leak certain memory buffer contents from a past request or session. All haproxy users are advised to upgrade to this updated package, which contains a backported patch to correct this issue.

tags | advisory, remote, web, tcp
systems | linux, redhat
advisories | CVE-2015-3281
SHA-256 | a1868fb9dedf29fa4bb599e9106f07d547ff3ee2b7818f9cbe0a86b2f67ecc40
Ubuntu Security Notice USN-2668-1
Posted Jul 7, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2668-1 - It was discovered that HAProxy incorrectly handled certain buffers. A remote attacker could possibly use this issue to obtain sensitive information belonging to previous requests.

tags | advisory, remote
systems | linux, ubuntu
advisories | CVE-2015-3281
SHA-256 | b107f1345f2ab6dfdbdf52fda2fa1a45e08e413705d2abc04885e58aa92242de
Debian Security Advisory 3301-1
Posted Jul 7, 2015
Authored by Debian | Site debian.org

Debian Linux Security Advisory 3301-1 - Charlie Smurthwaite of aTech Media discovered a flaw in HAProxy, a fast and reliable load balancing reverse proxy, when HTTP pipelining is used. A client can take advantage of this flaw to cause data corruption and retrieve uninitialized memory contents that exhibit data from a past request or session.

tags | advisory, web
systems | linux, debian
advisories | CVE-2015-3281
SHA-256 | 9bf2b86084d33a2479eec479c7be4147225bfceff05cd92b80dccc62204eaa96
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