Several vulnerabilities were discovered in Sympa, a mailing list manager, which could result in local privilege escalation, denial of service or unauthorized access via the SOAP API.
Additionally to mitigate CVE-2020-26880 the sympa_newaliases-wrapper is no longer installed setuid root by default. A new Debconf question is introduced to allow setuid installations in setups where it is needed.
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DSA-4818. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('compat.inc');
if (description)
{
script_id(144594);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/01/31");
script_cve_id(
"CVE-2020-10936",
"CVE-2020-26932",
"CVE-2020-29668",
"CVE-2020-9369"
);
script_xref(name:"DSA", value:"4818");
script_name(english:"Debian DSA-4818-1 : sympa - security update");
script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security-related update.");
script_set_attribute(attribute:"description", value:
"Several vulnerabilities were discovered in Sympa, a mailing list
manager, which could result in local privilege escalation, denial of
service or unauthorized access via the SOAP API.
Additionally to mitigate CVE-2020-26880 the sympa_newaliases-wrapper
is no longer installed setuid root by default. A new Debconf question
is introduced to allow setuid installations in setups where it is
needed.");
script_set_attribute(attribute:"see_also", value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=952428");
script_set_attribute(attribute:"see_also", value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=961491");
script_set_attribute(attribute:"see_also", value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=971904");
script_set_attribute(attribute:"see_also", value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=976020");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2020-26880");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/sympa");
script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/buster/sympa");
script_set_attribute(attribute:"see_also", value:"https://www.debian.org/security/2020/dsa-4818");
script_set_attribute(attribute:"solution", value:
"Upgrade the sympa packages.
For the stable distribution (buster), these problems have been fixed
in version 6.2.40~dfsg-1+deb10u1.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-10936");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2020/02/24");
script_set_attribute(attribute:"patch_publication_date", value:"2020/12/23");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/12/24");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:sympa");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:10.0");
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) 2020-2024 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:"10.0", prefix:"sympa", reference:"6.2.40~dfsg-1+deb10u1")) 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 | sympa | p-cpe:/a:debian:debian_linux:sympa |
debian | debian_linux | 10.0 | cpe:/o:debian:debian_linux:10.0 |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-10936
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26932
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-29668
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-9369
bugs.debian.org/cgi-bin/bugreport.cgi?bug=952428
bugs.debian.org/cgi-bin/bugreport.cgi?bug=961491
bugs.debian.org/cgi-bin/bugreport.cgi?bug=971904
bugs.debian.org/cgi-bin/bugreport.cgi?bug=976020
packages.debian.org/source/buster/sympa
security-tracker.debian.org/tracker/CVE-2020-26880
security-tracker.debian.org/tracker/source-package/sympa
www.debian.org/security/2020/dsa-4818