7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.016 Low
EPSS
Percentile
87.4%
Two vulnerabilities were discovered in cURL, an URL transfer library.
CVE-2018-16839 Harry Sintonen discovered that, on systems with a 32 bit size_t, an integer overflow would be triggered when a SASL user name longer than 2GB is used. This would in turn cause a very small buffer to be allocated instead of the intended very huge one, which would trigger a heap buffer overflow when the buffer is used.
CVE-2018-16842 Brian Carpenter discovered that the logic in the curl tool to wrap error messages at 80 columns is flawed, leading to a read buffer overflow if a single word in the message is itself longer than 80 bytes.
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DSA-4331. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include("compat.inc");
if (description)
{
script_id(118720);
script_version("1.5");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/04/29");
script_cve_id("CVE-2018-16839", "CVE-2018-16842");
script_xref(name:"DSA", value:"4331");
script_name(english:"Debian DSA-4331-1 : curl - security update");
script_summary(english:"Checks dpkg output for the updated package");
script_set_attribute(
attribute:"synopsis",
value:"The remote Debian host is missing a security-related update."
);
script_set_attribute(
attribute:"description",
value:
"Two vulnerabilities were discovered in cURL, an URL transfer library.
- CVE-2018-16839
Harry Sintonen discovered that, on systems with a 32 bit
size_t, an integer overflow would be triggered when a
SASL user name longer than 2GB is used. This would in
turn cause a very small buffer to be allocated instead
of the intended very huge one, which would trigger a
heap buffer overflow when the buffer is used.
- CVE-2018-16842
Brian Carpenter discovered that the logic in the curl
tool to wrap error messages at 80 columns is flawed,
leading to a read buffer overflow if a single word in
the message is itself longer than 80 bytes."
);
script_set_attribute(
attribute:"see_also",
value:"https://security-tracker.debian.org/tracker/CVE-2018-16839"
);
script_set_attribute(
attribute:"see_also",
value:"https://security-tracker.debian.org/tracker/CVE-2018-16842"
);
script_set_attribute(
attribute:"see_also",
value:"https://security-tracker.debian.org/tracker/source-package/curl"
);
script_set_attribute(
attribute:"see_also",
value:"https://packages.debian.org/source/stretch/curl"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.debian.org/security/2018/dsa-4331"
);
script_set_attribute(
attribute:"solution",
value:
"Upgrade the curl packages.
For the stable distribution (stretch), these problems have been fixed
in version 7.52.1-5+deb9u8."
);
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
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:"cpe:/o:debian:debian_linux:9.0");
script_set_attribute(attribute:"vuln_publication_date", value:"2018/10/31");
script_set_attribute(attribute:"patch_publication_date", value:"2018/11/02");
script_set_attribute(attribute:"plugin_publication_date", value:"2018/11/05");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2018-2021 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+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl3", reference:"7.52.1-5+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl3-dbg", reference:"7.52.1-5+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl3-gnutls", reference:"7.52.1-5+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl3-nss", reference:"7.52.1-5+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl4-doc", reference:"7.52.1-5+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl4-gnutls-dev", reference:"7.52.1-5+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl4-nss-dev", reference:"7.52.1-5+deb9u8")) flag++;
if (deb_check(release:"9.0", prefix:"libcurl4-openssl-dev", reference:"7.52.1-5+deb9u8")) flag++;
if (flag)
{
if (report_verbosity > 0) security_hole(port:0, extra:deb_report_get());
else security_hole(0);
exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
Vendor | Product | Version | CPE |
---|---|---|---|
debian | debian_linux | curl | p-cpe:/a:debian:debian_linux:curl |
debian | debian_linux | 9.0 | cpe:/o:debian:debian_linux:9.0 |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16839
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16842
packages.debian.org/source/stretch/curl
security-tracker.debian.org/tracker/CVE-2018-16839
security-tracker.debian.org/tracker/CVE-2018-16842
security-tracker.debian.org/tracker/source-package/curl
www.debian.org/security/2018/dsa-4331
7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
0.016 Low
EPSS
Percentile
87.4%