7.2 High
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.3 High
AI Score
Confidence
High
0.97 High
EPSS
Percentile
99.7%
The remote host is missing an update for the
# SPDX-FileCopyrightText: 2022 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("1.3.6.1.4.1.25623.1.1.13.2021.026.01");
script_cve_id("CVE-2021-3156");
script_tag(name:"creation_date", value:"2022-04-21 12:12:27 +0000 (Thu, 21 Apr 2022)");
script_version("2024-02-02T05:06:09+0000");
script_tag(name:"last_modification", value:"2024-02-02 05:06:09 +0000 (Fri, 02 Feb 2024)");
script_tag(name:"cvss_base", value:"7.2");
script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:C/I:C/A:C");
script_tag(name:"severity_vector", value:"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2021-02-03 19:42:10 +0000 (Wed, 03 Feb 2021)");
script_name("Slackware: Security Advisory (SSA:2021-026-01)");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2022 Greenbone AG");
script_family("Slackware Local Security Checks");
script_dependencies("gather-package-list.nasl");
script_mandatory_keys("ssh/login/slackware_linux", "ssh/login/slackpack", re:"ssh/login/release=SLK(14\.0|14\.1|14\.2|current)");
script_xref(name:"Advisory-ID", value:"SSA:2021-026-01");
script_xref(name:"URL", value:"http://www.slackware.com/security/viewer.php?l=slackware-security&y=2021&m=slackware-security.461226");
script_tag(name:"summary", value:"The remote host is missing an update for the 'sudo' package(s) announced via the SSA:2021-026-01 advisory.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");
script_tag(name:"insight", value:"New sudo packages are available for Slackware 14.0, 14.1, 14.2, and -current to
fix security issues.
Here are the details from the Slackware 14.2 ChangeLog:
+--------------------------+
patches/packages/sudo-1.9.5p2-i586-1_slack14.2.txz: Upgraded.
When invoked as sudoedit, the same set of command line options
are now accepted as for 'sudo -e'. The -H and -P options are
now rejected for sudoedit and 'sudo -e' which matches the sudo
1.7 behavior. This is part of the fix for CVE-2021-3156.
Fixed a potential buffer overflow when unescaping backslashes
in the command's arguments. Normally, sudo escapes special
characters when running a command via a shell (sudo -s or sudo
-i). However, it was also possible to run sudoedit with the -s
or -i flags in which case no escaping had actually been done,
making a buffer overflow possible. This fixes CVE-2021-3156.
For more information, see:
[link moved to references]
(* Security fix *)
+--------------------------+");
script_tag(name:"affected", value:"'sudo' package(s) on Slackware 14.0, Slackware 14.1, Slackware 14.2, Slackware current.");
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-slack.inc");
release = slk_get_ssh_release();
if(!release)
exit(0);
res = "";
report = "";
if(release == "SLK14.0") {
if(!isnull(res = isslkpkgvuln(pkg:"sudo", ver:"1.9.5p2-i486-1_slack14.0", rls:"SLK14.0"))) {
report += res;
}
if(!isnull(res = isslkpkgvuln(pkg:"sudo", ver:"1.9.5p2-x86_64-1_slack14.0", rls:"SLK14.0"))) {
report += res;
}
if(report != "") {
security_message(data:report);
} else if(__pkg_match) {
exit(99);
}
exit(0);
}
if(release == "SLK14.1") {
if(!isnull(res = isslkpkgvuln(pkg:"sudo", ver:"1.9.5p2-i486-1_slack14.1", rls:"SLK14.1"))) {
report += res;
}
if(!isnull(res = isslkpkgvuln(pkg:"sudo", ver:"1.9.5p2-x86_64-1_slack14.1", rls:"SLK14.1"))) {
report += res;
}
if(report != "") {
security_message(data:report);
} else if(__pkg_match) {
exit(99);
}
exit(0);
}
if(release == "SLK14.2") {
if(!isnull(res = isslkpkgvuln(pkg:"sudo", ver:"1.9.5p2-i586-1_slack14.2", rls:"SLK14.2"))) {
report += res;
}
if(!isnull(res = isslkpkgvuln(pkg:"sudo", ver:"1.9.5p2-x86_64-1_slack14.2", rls:"SLK14.2"))) {
report += res;
}
if(report != "") {
security_message(data:report);
} else if(__pkg_match) {
exit(99);
}
exit(0);
}
if(release == "SLKcurrent") {
if(!isnull(res = isslkpkgvuln(pkg:"sudo", ver:"1.9.5p2-i586-1", rls:"SLKcurrent"))) {
report += res;
}
if(!isnull(res = isslkpkgvuln(pkg:"sudo", ver:"1.9.5p2-x86_64-1", rls:"SLKcurrent"))) {
report += res;
}
if(report != "") {
security_message(data:report);
} else if(__pkg_match) {
exit(99);
}
exit(0);
}
exit(0);
7.2 High
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.3 High
AI Score
Confidence
High
0.97 High
EPSS
Percentile
99.7%