CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
82.2%
The remote host is missing an update for the Debian
# SPDX-FileCopyrightText: 2023 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("1.3.6.1.4.1.25623.1.1.1.2.2023.3682");
script_cve_id("CVE-2021-39537", "CVE-2023-29491");
script_tag(name:"creation_date", value:"2023-12-04 04:22:47 +0000 (Mon, 04 Dec 2023)");
script_version("2024-02-02T05:06:10+0000");
script_tag(name:"last_modification", value:"2024-02-02 05:06:10 +0000 (Fri, 02 Feb 2024)");
script_tag(name:"cvss_base", value:"6.8");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:P/A:P");
script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2021-10-02 02:14:20 +0000 (Sat, 02 Oct 2021)");
script_name("Debian: Security Advisory (DLA-3682-1)");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2023 Greenbone AG");
script_family("Debian Local Security Checks");
script_dependencies("gather-package-list.nasl");
script_mandatory_keys("ssh/login/debian_linux", "ssh/login/packages", re:"ssh/login/release=DEB10");
script_xref(name:"Advisory-ID", value:"DLA-3682-1");
script_xref(name:"URL", value:"https://www.debian.org/lts/security/2023/DLA-3682-1");
script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/ncurses");
script_xref(name:"URL", value:"https://wiki.debian.org/LTS");
script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'ncurses' package(s) announced via the DLA-3682-1 advisory.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");
script_tag(name:"insight", value:"Issues were found in ncurses, a collection of shared libraries for terminal handling, which could lead to denial of service.
CVE-2021-39537
It has been discovered that the tic(1) utility is susceptible to a heap overflow on crafted input due to improper bounds checking.
CVE-2023-29491
Jonathan Bar Or, Michael Pearse and Emanuele Cozzi have discovered that when ncurses is used by a setuid application, a local user can trigger security-relevant memory corruption via malformed data in a terminfo database file found in $HOME/.terminfo or reached via the TERMINFO or TERM environment variables.
In order to mitigate this issue, ncurses now further restricts programs running with elevated privileges (setuid/setgid programs). Programs run by the superuser remain able to load custom terminfo entries.
This change aligns ncurses' behavior in buster-security with that of Debian Bullseye's latest point release (6.2+20201114-2+deb11u2).
For Debian 10 buster, these problems have been fixed in version 6.1+20181013-2+deb10u5.
We recommend that you upgrade your ncurses packages.
For the detailed security status of ncurses please refer to its security tracker page at: [link moved to references]
Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: [link moved to references]");
script_tag(name:"affected", value:"'ncurses' package(s) on Debian 10.");
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-deb.inc");
release = dpkg_get_ssh_release();
if(!release)
exit(0);
res = "";
report = "";
if(release == "DEB10") {
if(!isnull(res = isdpkgvuln(pkg:"lib32ncurses-dev", ver:"6.1+20181013-2+deb10u5", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"lib32ncurses6", ver:"6.1+20181013-2+deb10u5", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"lib32ncursesw6", ver:"6.1+20181013-2+deb10u5", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"lib32tinfo6", ver:"6.1+20181013-2+deb10u5", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"lib64ncurses-dev", ver:"6.1+20181013-2+deb10u5", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"lib64ncurses6", ver:"6.1+20181013-2+deb10u5", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"lib64ncursesw6", ver:"6.1+20181013-2+deb10u5", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"lib64tinfo6", ver:"6.1+20181013-2+deb10u5", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libncurses-dev", ver:"6.1+20181013-2+deb10u5", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libncurses5", ver:"6.1+20181013-2+deb10u5", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libncurses5-dev", ver:"6.1+20181013-2+deb10u5", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libncurses6", ver:"6.1+20181013-2+deb10u5", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libncurses6-dbg", ver:"6.1+20181013-2+deb10u5", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libncursesw5", ver:"6.1+20181013-2+deb10u5", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libncursesw5-dev", ver:"6.1+20181013-2+deb10u5", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libncursesw6", ver:"6.1+20181013-2+deb10u5", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libncursesw6-dbg", ver:"6.1+20181013-2+deb10u5", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libtinfo-dev", ver:"6.1+20181013-2+deb10u5", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libtinfo5", ver:"6.1+20181013-2+deb10u5", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libtinfo6", ver:"6.1+20181013-2+deb10u5", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libtinfo6-dbg", ver:"6.1+20181013-2+deb10u5", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libtinfo6-udeb", ver:"6.1+20181013-2+deb10u5", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"ncurses-base", ver:"6.1+20181013-2+deb10u5", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"ncurses-bin", ver:"6.1+20181013-2+deb10u5", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"ncurses-doc", ver:"6.1+20181013-2+deb10u5", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"ncurses-examples", ver:"6.1+20181013-2+deb10u5", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"ncurses-term", ver:"6.1+20181013-2+deb10u5", rls:"DEB10"))) {
report += res;
}
if(report != "") {
security_message(data:report);
} else if(__pkg_match) {
exit(99);
}
exit(0);
}
exit(0);
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
82.2%