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
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
90.8%
A flaw was discovered in the CalDAV feature in httpd of the Cyrus IMAP server, leading to denial of service or potentially the execution of arbitrary code via a crafted HTTP PUT operation for an event with a long iCalendar property name.
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DSA-4458. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('compat.inc');
if (description)
{
script_id(125784);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/05/16");
script_cve_id("CVE-2019-11356");
script_xref(name:"DSA", value:"4458");
script_name(english:"Debian DSA-4458-1 : cyrus-imapd - security update");
script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security-related update.");
script_set_attribute(attribute:"description", value:
"A flaw was discovered in the CalDAV feature in httpd of the Cyrus IMAP
server, leading to denial of service or potentially the execution of
arbitrary code via a crafted HTTP PUT operation for an event with a
long iCalendar property name.");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/cyrus-imapd");
script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/stretch/cyrus-imapd");
script_set_attribute(attribute:"see_also", value:"https://www.debian.org/security/2019/dsa-4458");
script_set_attribute(attribute:"solution", value:
"Upgrade the cyrus-imapd packages.
For the stable distribution (stretch), this problem has been fixed in
version 2.5.10-3+deb9u1.");
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:"cvss_score_source", value:"CVE-2019-11356");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"vuln_publication_date", value:"2019/06/03");
script_set_attribute(attribute:"patch_publication_date", value:"2019/06/08");
script_set_attribute(attribute:"plugin_publication_date", value:"2019/06/10");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:cyrus-imapd");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Debian Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2019-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
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:"cyrus-admin", reference:"2.5.10-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"cyrus-caldav", reference:"2.5.10-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"cyrus-clients", reference:"2.5.10-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"cyrus-common", reference:"2.5.10-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"cyrus-dev", reference:"2.5.10-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"cyrus-doc", reference:"2.5.10-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"cyrus-imapd", reference:"2.5.10-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"cyrus-murder", reference:"2.5.10-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"cyrus-nntpd", reference:"2.5.10-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"cyrus-pop3d", reference:"2.5.10-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"cyrus-replication", reference:"2.5.10-3+deb9u1")) flag++;
if (deb_check(release:"9.0", prefix:"libcyrus-imap-perl", reference:"2.5.10-3+deb9u1")) 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");
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
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
90.8%