Debian: Security Advisory (DLA-2664-1)

# 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("1.3.6.1.4.1.25623.1.0.892664");
  script_cve_id("CVE-2021-22876");
  script_tag(name:"creation_date", value:"2021-05-18 03:00:08 +0000 (Tue, 18 May 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:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:N/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2021-04-06 18:02:00 +0000 (Tue, 06 Apr 2021)");

  script_name("Debian: Security Advisory (DLA-2664-1)");
  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=DEB9");

  script_xref(name:"Advisory-ID", value:"DLA-2664-1");
  script_xref(name:"URL", value:"https://www.debian.org/lts/security/2021/DLA-2664-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/curl");
  script_xref(name:"URL", value:"https://wiki.debian.org/LTS");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'curl' package(s) announced via the DLA-2664-1 advisory.");

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

  script_tag(name:"insight", value:"Viktor Szakats reported that libcurl, an URL transfer library, does not strip off user credentials from the URL when automatically populating the Referer HTTP request header field in outgoing HTTP requests. Sensitive authentication data may leak to the server that is the target of the second HTTP request.

For Debian 9 stretch, this problem has been fixed in version 7.52.1-5+deb9u14.

We recommend that you upgrade your curl packages.

For the detailed security status of curl please refer to its security tracker page at: [link moved to references]

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: [link moved to references]");

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

  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 == "DEB9") {

  if(!isnull(res = isdpkgvuln(pkg:"curl", ver:"7.52.1-5+deb9u14", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libcurl3", ver:"7.52.1-5+deb9u14", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libcurl3-dbg", ver:"7.52.1-5+deb9u14", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libcurl3-gnutls", ver:"7.52.1-5+deb9u14", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libcurl3-nss", ver:"7.52.1-5+deb9u14", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libcurl4-doc", ver:"7.52.1-5+deb9u14", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libcurl4-gnutls-dev", ver:"7.52.1-5+deb9u14", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libcurl4-nss-dev", ver:"7.52.1-5+deb9u14", rls:"DEB9"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libcurl4-openssl-dev", ver:"7.52.1-5+deb9u14", rls:"DEB9"))) {
    report += res;
  }

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

exit(0);