Debian: Security Advisory (DSA-4741-1)

# SPDX-FileCopyrightText: 2020 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("1.3.6.1.4.1.25623.1.0.704741");
  script_cve_id("CVE-2020-12762");
  script_tag(name:"creation_date", value:"2020-08-07 03:00:09 +0000 (Fri, 07 Aug 2020)");
  script_version("2024-02-02T05:06:07+0000");
  script_tag(name:"last_modification", value:"2024-02-02 05:06:07 +0000 (Fri, 02 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_tag(name:"severity_vector", value:"CVSS:3.1/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:"2020-05-12 20:41:27 +0000 (Tue, 12 May 2020)");

  script_name("Debian: Security Advisory (DSA-4741-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2020 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=DEB10");

  script_xref(name:"Advisory-ID", value:"DSA-4741-1");
  script_xref(name:"URL", value:"https://www.debian.org/security/2020/DSA-4741-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-4741");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/json-c");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'json-c' package(s) announced via the DSA-4741-1 advisory.");

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

  script_tag(name:"insight", value:"Tobias Stoeckmann discovered an integer overflow in the json-c JSON library, which could result in denial of service or potentially the execution of arbitrary code if large malformed JSON files are processed.

For the stable distribution (buster), this problem has been fixed in version 0.12.1+ds-2+deb10u1.

We recommend that you upgrade your json-c packages.

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

  script_tag(name:"affected", value:"'json-c' package(s) on 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:"libjson-c-dev", ver:"0.12.1+ds-2+deb10u1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libjson-c-doc", ver:"0.12.1+ds-2+deb10u1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libjson-c3", ver:"0.12.1+ds-2+deb10u1", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libjson-c3-udeb", ver:"0.12.1+ds-2+deb10u1", rls:"DEB10"))) {
    report += res;
  }

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

exit(0);