Debian: Security Advisory (DSA-1456-1)

# SPDX-FileCopyrightText: 2008 Greenbone AG
# 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("1.3.6.1.4.1.25623.1.0.60133");
  script_cve_id("CVE-2007-4321");
  script_tag(name:"creation_date", value:"2008-01-31 15:11:48 +0000 (Thu, 31 Jan 2008)");
  script_version("2024-02-01T14:37:10+0000");
  script_tag(name:"last_modification", value:"2024-02-01 14:37:10 +0000 (Thu, 01 Feb 2024)");
  script_tag(name:"cvss_base", value:"6.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:P/A:P");

  script_name("Debian: Security Advisory (DSA-1456-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2008 Greenbone AG");
  script_family("Debian Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/debian_linux", "ssh/login/packages", re:"ssh/login/release=DEB4");

  script_xref(name:"Advisory-ID", value:"DSA-1456-1");
  script_xref(name:"URL", value:"https://www.debian.org/security/2008/DSA-1456-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-1456");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'fail2ban' package(s) announced via the DSA-1456-1 advisory.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");

  script_tag(name:"insight", value:"Daniel B. Cid discovered that fail2ban, a tool to block IP addresses that cause login failures, is too liberal about parsing SSH log files, allowing an attacker to block any IP address.

The old stable distribution (sarge) doesn't contain fail2ban.

For the stable distribution (etch), this problem has been fixed in version 0.7.5-2etch1.

For the unstable distribution (sid), this problem has been fixed in version 0.8.0-4.

We recommend that you upgrade your fail2ban package.");

  script_tag(name:"affected", value:"'fail2ban' package(s) on Debian 4.");

  script_tag(name:"solution", value:"Please install the updated package(s).");

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

  exit(0);
}

include("revisions-lib.inc");
include("pkg-lib-deb.inc");

release = dpkg_get_ssh_release();
if(!release)
  exit(0);

res = "";
report = "";

if(release == "DEB4") {

  if(!isnull(res = isdpkgvuln(pkg:"fail2ban", ver:"0.7.5-2etch1", rls:"DEB4"))) {
    report += res;
  }

  if(report != "") {
    security_message(data:report);
  } else if(__pkg_match) {
    exit(99);
  }
  exit(0);
}

exit(0);