Debian: Security Advisory (DSA-4963-1)

# 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("1.3.6.1.4.1.25623.1.0.704963");
  script_cve_id("CVE-2021-3711", "CVE-2021-3712");
  script_tag(name:"creation_date", value:"2021-08-25 03:00:14 +0000 (Wed, 25 Aug 2021)");
  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:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
  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:"2021-08-31 16:37:28 +0000 (Tue, 31 Aug 2021)");

  script_name("Debian: Security Advisory (DSA-4963-1)");
  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-4963-1");
  script_xref(name:"URL", value:"https://www.debian.org/security/2021/DSA-4963-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-4963");
  script_xref(name:"URL", value:"https://www.openssl.org/news/secadv/20210824.txt");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/openssl");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'openssl' package(s) announced via the DSA-4963-1 advisory.");

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

  script_tag(name:"insight", value:"Multiple vulnerabilities have been discovered in OpenSSL, a Secure Sockets Layer toolkit.

CVE-2021-3711

John Ouyang reported a buffer overflow vulnerability in the SM2 decryption. An attacker able to present SM2 content for decryption to an application can take advantage of this flaw to change application behaviour or cause the application to crash (denial of service).

CVE-2021-3712

Ingo Schwarze reported a buffer overrun flaw when processing ASN.1 strings in the X509_aux_print() function, which can result in denial of service.

Additional details can be found in the upstream advisory: [link moved to references]

For the oldstable distribution (buster), these problems have been fixed in version 1.1.1d-0+deb10u7.

For the stable distribution (bullseye), these problems have been fixed in version 1.1.1k-1+deb11u1.

We recommend that you upgrade your openssl packages.

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

  script_tag(name:"affected", value:"'openssl' 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");

  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:"libcrypto1.1-udeb", ver:"1.1.1d-0+deb10u7", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libssl-dev", ver:"1.1.1d-0+deb10u7", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libssl-doc", ver:"1.1.1d-0+deb10u7", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libssl1.1", ver:"1.1.1d-0+deb10u7", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libssl1.1-udeb", ver:"1.1.1d-0+deb10u7", rls:"DEB10"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"openssl", ver:"1.1.1d-0+deb10u7", 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:"libcrypto1.1-udeb", ver:"1.1.1k-1+deb11u1", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libssl-dev", ver:"1.1.1k-1+deb11u1", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libssl-doc", ver:"1.1.1k-1+deb11u1", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libssl1.1", ver:"1.1.1k-1+deb11u1", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libssl1.1-udeb", ver:"1.1.1k-1+deb11u1", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"openssl", ver:"1.1.1k-1+deb11u1", rls:"DEB11"))) {
    report += res;
  }

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

exit(0);