Debian: Security Advisory (DSA-5022-1)

# SPDX-FileCopyrightText: 2021 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("1.3.6.1.4.1.25623.1.0.705022");
  script_cve_id("CVE-2021-45046");
  script_tag(name:"creation_date", value:"2021-12-17 02:00:33 +0000 (Fri, 17 Dec 2021)");
  script_version("2024-08-08T05:05:41+0000");
  script_tag(name:"last_modification", value:"2024-08-08 05:05:41 +0000 (Thu, 08 Aug 2024)");
  script_tag(name:"cvss_base", value:"5.1");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:H/Au:N/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2021-12-20 16:21:44 +0000 (Mon, 20 Dec 2021)");

  script_name("Debian: Security Advisory (DSA-5022-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2021 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|11)");

  script_xref(name:"Advisory-ID", value:"DSA-5022-1");
  script_xref(name:"URL", value:"https://www.debian.org/security/2021/DSA-5022-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-5022");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/apache-log4j2");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'apache-log4j2' package(s) announced via the DSA-5022-1 advisory.");

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

  script_tag(name:"insight", value:"It was found that the fix to address CVE-2021-44228 in Apache Log4j, a Logging Framework for Java, was incomplete in certain non-default configurations. This could allow attackers with control over Thread Context Map (MDC) input data when the logging configuration uses a non-default Pattern Layout with either a Context Lookup (for example, $${ctx:loginId}) or a Thread Context Map pattern (%X, %mdc, or %MDC) to craft malicious input data using a JNDI Lookup pattern resulting in a denial of service (DOS) attack.

For the oldstable distribution (buster), this problem has been fixed in version 2.16.0-1~deb10u1.

For the stable distribution (bullseye), this problem has been fixed in version 2.16.0-1~deb11u1.

We recommend that you upgrade your apache-log4j2 packages.

For the detailed security status of apache-log4j2 please refer to its security tracker page at: [link moved to references]");

  script_tag(name:"affected", value:"'apache-log4j2' package(s) on Debian 10, Debian 11.");

  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");
  script_xref(name:"CISA", value:"Known Exploited Vulnerability (KEV) catalog");
  script_xref(name:"URL", value:"https://www.cisa.gov/known-exploited-vulnerabilities-catalog");

  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:"liblog4j2-java", ver:"2.16.0-1~deb10u1", rls:"DEB10"))) {
    report += res;
  }

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

if(release == "DEB11") {

  if(!isnull(res = isdpkgvuln(pkg:"liblog4j2-java", ver:"2.16.0-1~deb11u1", rls:"DEB11"))) {
    report += res;
  }

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

exit(0);