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FreeBSD Security Advisory (FreeBSD-SA-06:22.openssh.asc)

🗓️ 04 Sep 2008 00:00:00Reported by Copyright (C) 2008 E-Soft Inc.Type 
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The remote host is missing an update to the system as announced in the referenced FreeBSD Security Advisory (FreeBSD-SA-06:22.openssh.asc). OpenSSH is affected by a CRC compensation attack and a race condition in a signal handler

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Code
# SPDX-FileCopyrightText: 2008 E-Soft Inc.
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.57476");
  script_version("2023-07-26T05:05:09+0000");
  script_tag(name:"last_modification", value:"2023-07-26 05:05:09 +0000 (Wed, 26 Jul 2023)");
  script_tag(name:"creation_date", value:"2008-09-04 20:41:11 +0200 (Thu, 04 Sep 2008)");
  script_cve_id("CVE-2006-4924");
  script_tag(name:"cvss_base", value:"7.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_name("FreeBSD Security Advisory (FreeBSD-SA-06:22.openssh.asc)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2008 E-Soft Inc.");
  script_family("FreeBSD Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/freebsd", "ssh/login/freebsdpatchlevel");

  script_tag(name:"insight", value:"OpenSSH is an implementation of the SSH protocol suite, providing an
encrypted, authenticated transport for a variety of services,
including remote shell access.

The CRC compensation attack detector in the sshd(8) daemon, upon receipt
of duplicate blocks, uses CPU time cubic in the number of duplicate
blocks received.  [CVE-2006-4924]

A race condition exists in a signal handler used by the sshd(8) daemon
to handle the LoginGraceTime option, which can potentially cause some
cleanup routines to be executed multiple times.  [CVE-2006-5051]");

  script_tag(name:"solution", value:"Upgrade your system to the appropriate stable release
  or security branch dated after the correction date.");

  script_xref(name:"URL", value:"https://secure1.securityspace.com/smysecure/catid.html?in=FreeBSD-SA-06:22.openssh.asc");

  script_tag(name:"summary", value:"The remote host is missing an update to the system
  as announced in the referenced advisory FreeBSD-SA-06:22.openssh.asc");

  script_tag(name:"qod_type", value:"package");
  script_tag(name:"solution_type", value:"VendorFix");

  exit(0);
}

include("pkg-lib-bsd.inc");

vuln = FALSE;

if(patchlevelcmp(rel:"6.1", patchlevel:"10")<0) {
  vuln = TRUE;
}
if(patchlevelcmp(rel:"6.0", patchlevel:"15")<0) {
  vuln = TRUE;
}
if(patchlevelcmp(rel:"5.5", patchlevel:"8")<0) {
  vuln = TRUE;
}
if(patchlevelcmp(rel:"5.4", patchlevel:"22")<0) {
  vuln = TRUE;
}
if(patchlevelcmp(rel:"5.3", patchlevel:"37")<0) {
  vuln = TRUE;
}
if(patchlevelcmp(rel:"4.11", patchlevel:"25")<0) {
  vuln = TRUE;
}

if(vuln) {
  security_message(port:0);
} else if (__pkg_match) {
  exit(99);
}

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26 Jul 2023 00:00Current
8.1High risk
Vulners AI Score8.1
CVSS 29.3
CVSS 3.18.1
EPSS0.44963
38