Debian: Security Advisory (DSA-4489-1)

# SPDX-FileCopyrightText: 2019 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("1.3.6.1.4.1.25623.1.0.704489");
  script_cve_id("CVE-2018-20969", "CVE-2019-13636", "CVE-2019-13638");
  script_tag(name:"creation_date", value:"2019-07-28 02:00:06 +0000 (Sun, 28 Jul 2019)");
  script_version("2024-02-02T05:06:06+0000");
  script_tag(name:"last_modification", value:"2024-02-02 05:06:06 +0000 (Fri, 02 Feb 2024)");
  script_tag(name:"cvss_base", value:"9.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2019-08-05 18:44:44 +0000 (Mon, 05 Aug 2019)");

  script_name("Debian: Security Advisory (DSA-4489-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2019 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=DEB(10|9)");

  script_xref(name:"Advisory-ID", value:"DSA-4489-1");
  script_xref(name:"URL", value:"https://www.debian.org/security/2019/DSA-4489-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-4489");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/patch");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'patch' package(s) announced via the DSA-4489-1 advisory.");

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

  script_tag(name:"insight", value:"Imre Rad discovered several vulnerabilities in GNU patch, leading to shell command injection or escape from the working directory and access and overwrite files, if specially crafted patch files are processed.

This update includes a bugfix for a regression introduced by the patch to address CVE-2018-1000156 when applying an ed-style patch (#933140).

For the oldstable distribution (stretch), these problems have been fixed in version 2.7.5-1+deb9u2.

For the stable distribution (buster), these problems have been fixed in version 2.7.6-3+deb10u1.

We recommend that you upgrade your patch packages.

For the detailed security status of patch please refer to its security tracker page at: [link moved to references]");

  script_tag(name:"affected", value:"'patch' package(s) on Debian 9, Debian 10.");

  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 == "DEB10") {

  if(!isnull(res = isdpkgvuln(pkg:"patch", ver:"2.7.6-3+deb10u1", rls:"DEB10"))) {
    report += res;
  }

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

if(release == "DEB9") {

  if(!isnull(res = isdpkgvuln(pkg:"patch", ver:"2.7.5-1+deb9u2", rls:"DEB9"))) {
    report += res;
  }

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

exit(0);