Slackware: Security Advisory (SSA:2022-016-01)

# SPDX-FileCopyrightText: 2022 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("1.3.6.1.4.1.25623.1.1.13.2022.016.01");
  script_cve_id("CVE-2021-45960", "CVE-2021-46143", "CVE-2022-22822", "CVE-2022-22823", "CVE-2022-22824", "CVE-2022-22825", "CVE-2022-22826", "CVE-2022-22827");
  script_tag(name:"creation_date", value:"2022-04-21 12:12:27 +0000 (Thu, 21 Apr 2022)");
  script_version("2025-01-14T05:37:03+0000");
  script_tag(name:"last_modification", value:"2025-01-14 05:37:03 +0000 (Tue, 14 Jan 2025)");
  script_tag(name:"cvss_base", value:"9.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:C/I:C/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2022-02-11 15:53:21 +0000 (Fri, 11 Feb 2022)");

  script_name("Slackware: Security Advisory (SSA:2022-016-01)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2022 Greenbone AG");
  script_family("Slackware Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/slackware_linux", "ssh/login/slackpack", re:"ssh/login/release=SLK(14\.0|14\.1|14\.2|current)");

  script_xref(name:"Advisory-ID", value:"SSA:2022-016-01");
  script_xref(name:"URL", value:"http://www.slackware.com/security/viewer.php?l=slackware-security&y=2022&m=slackware-security.476837");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'expat' package(s) announced via the SSA:2022-016-01 advisory.");

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

  script_tag(name:"insight", value:"New expat packages are available for Slackware 14.0, 14.1, 14.2, and -current to
fix security issues.


Here are the details from the Slackware 14.2 ChangeLog:
+--------------------------+
patches/packages/expat-2.4.3-i586-1_slack14.2.txz: Upgraded.
 Fix issues with left shifts by >=29 places resulting in:
 a) realloc acting as free
 b) realloc allocating too few bytes
 c) undefined behavior
 Fix integer overflow on variable m_groupSize in function doProlog leading
 to realloc acting as free. Impact is denial of service or other undefined
 behavior.
 Prevent integer overflows near memory allocation at multiple places.
 For more information, see:
 [links moved to references]
 (* Security fix *)
+--------------------------+");

  script_tag(name:"affected", value:"'expat' package(s) on Slackware 14.0, Slackware 14.1, Slackware 14.2, Slackware current.");

  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-slack.inc");

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

res = "";
report = "";

if(release == "SLK14.0") {

  if(!isnull(res = isslkpkgvuln(pkg:"expat", ver:"2.4.3-i486-1_slack14.0", rls:"SLK14.0"))) {
    report += res;
  }

  if(!isnull(res = isslkpkgvuln(pkg:"expat", ver:"2.4.3-x86_64-1_slack14.0", rls:"SLK14.0"))) {
    report += res;
  }

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

if(release == "SLK14.1") {

  if(!isnull(res = isslkpkgvuln(pkg:"expat", ver:"2.4.3-i486-1_slack14.1", rls:"SLK14.1"))) {
    report += res;
  }

  if(!isnull(res = isslkpkgvuln(pkg:"expat", ver:"2.4.3-x86_64-1_slack14.1", rls:"SLK14.1"))) {
    report += res;
  }

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

if(release == "SLK14.2") {

  if(!isnull(res = isslkpkgvuln(pkg:"expat", ver:"2.4.3-i586-1_slack14.2", rls:"SLK14.2"))) {
    report += res;
  }

  if(!isnull(res = isslkpkgvuln(pkg:"expat", ver:"2.4.3-x86_64-1_slack14.2", rls:"SLK14.2"))) {
    report += res;
  }

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

if(release == "SLKcurrent") {

  if(!isnull(res = isslkpkgvuln(pkg:"expat", ver:"2.4.3-i586-1", rls:"SLKcurrent"))) {
    report += res;
  }

  if(!isnull(res = isslkpkgvuln(pkg:"expat", ver:"2.4.3-x86_64-1", rls:"SLKcurrent"))) {
    report += res;
  }

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

exit(0);