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nessusThis script is Copyright (C) 2021-2024 and is owned by Tenable, Inc. or an Affiliate thereof.DEBIAN_DLA-2664.NASL
HistoryMay 18, 2021 - 12:00 a.m.

Debian DLA-2664-1 : curl security update

2021-05-1800:00:00
This script is Copyright (C) 2021-2024 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
14

7.1 High

AI Score

Confidence

High

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: https://security-tracker.debian.org/tracker/curl

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-2664-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('deprecated_nasl_level.inc');
include("compat.inc");

if (description)
{
  script_id(149568);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/01/12");

  script_cve_id("CVE-2021-22876");

  script_name(english:"Debian DLA-2664-1 : curl security update");
  script_summary(english:"Checks dpkg output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis",
    value:"The remote Debian host is missing a security update."
  );
  script_set_attribute(
    attribute:"description",
    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: https://security-tracker.debian.org/tracker/curl

NOTE: Tenable Network Security has extracted the preceding description
block directly from the DLA security advisory. Tenable has attempted
to automatically clean and format it as much as possible without
introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://lists.debian.org/debian-lts-announce/2021/05/msg00019.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/stretch/curl"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/source-package/curl"
  );
  script_set_attribute(attribute:"solution", value:"Upgrade the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-22876");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:curl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcurl3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcurl3-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcurl3-gnutls");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcurl3-nss");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcurl4-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcurl4-gnutls-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcurl4-nss-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcurl4-openssl-dev");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0");

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/04/01");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/05/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/05/18");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2021-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Debian Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"9.0", prefix:"curl", reference:"7.52.1-5+deb9u14")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl3", reference:"7.52.1-5+deb9u14")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl3-dbg", reference:"7.52.1-5+deb9u14")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl3-gnutls", reference:"7.52.1-5+deb9u14")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl3-nss", reference:"7.52.1-5+deb9u14")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl4-doc", reference:"7.52.1-5+deb9u14")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl4-gnutls-dev", reference:"7.52.1-5+deb9u14")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl4-nss-dev", reference:"7.52.1-5+deb9u14")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl4-openssl-dev", reference:"7.52.1-5+deb9u14")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:deb_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

7.1 High

AI Score

Confidence

High

Related for DEBIAN_DLA-2664.NASL