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openvasCopyright (C) 2023 Greenbone AGOPENVAS:13614125623111120235514
HistoryOct 04, 2023 - 12:00 a.m.

Debian: Security Advisory (DSA-5514-1)

2023-10-0400:00:00
Copyright (C) 2023 Greenbone AG
plugins.openvas.org
1
debian
glibc
buffer overflow

CVSS3

7.8

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

AI Score

7.6

Confidence

High

EPSS

0.016

Percentile

87.4%

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("1.3.6.1.4.1.25623.1.1.1.1.2023.5514");
  script_cve_id("CVE-2023-4911");
  script_tag(name:"creation_date", value:"2023-10-04 04:20:15 +0000 (Wed, 04 Oct 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:L/AC:L/Au:S/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:"2023-10-05 16:51:14 +0000 (Thu, 05 Oct 2023)");

  script_name("Debian: Security Advisory (DSA-5514-1)");
  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=DEB(11|12)");

  script_xref(name:"Advisory-ID", value:"DSA-5514-1");
  script_xref(name:"URL", value:"https://www.debian.org/security/2023/DSA-5514-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-5514");
  script_xref(name:"URL", value:"https://www.qualys.com/2023/10/03/cve-2023-4911/looney-tunables-local-privilege-escalation-glibc-ld-so.txt");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/glibc");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'glibc' package(s) announced via the DSA-5514-1 advisory.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");

  script_tag(name:"insight", value:"The Qualys Research Labs discovered a buffer overflow in the dynamic loader's processing of the GLIBC_TUNABLES environment variable. An attacker can exploit this flaw for privilege escalation.

Details can be found in the Qualys advisory at [link moved to references]

For the oldstable distribution (bullseye), this problem has been fixed in version 2.31-13+deb11u7.

For the stable distribution (bookworm), this problem has been fixed in version 2.36-9+deb12u3. This update includes fixes for CVE-2023-4527 and CVE-2023-4806 originally planned for the upcoming bookworm point release.

We recommend that you upgrade your glibc packages.

For the detailed security status of glibc please refer to its security tracker page at: [link moved to references]");

  script_tag(name:"affected", value:"'glibc' package(s) on Debian 11, Debian 12.");

  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 == "DEB11") {

  if(!isnull(res = isdpkgvuln(pkg:"glibc-doc", ver:"2.31-13+deb11u7", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"glibc-source", ver:"2.31-13+deb11u7", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc-bin", ver:"2.31-13+deb11u7", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc-dev-bin", ver:"2.31-13+deb11u7", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc-devtools", ver:"2.31-13+deb11u7", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc-l10n", ver:"2.31-13+deb11u7", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6", ver:"2.31-13+deb11u7", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-amd64", ver:"2.31-13+deb11u7", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-dbg", ver:"2.31-13+deb11u7", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-dev", ver:"2.31-13+deb11u7", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-dev-amd64", ver:"2.31-13+deb11u7", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-dev-i386", ver:"2.31-13+deb11u7", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-dev-mips32", ver:"2.31-13+deb11u7", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-dev-mips64", ver:"2.31-13+deb11u7", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-dev-mipsn32", ver:"2.31-13+deb11u7", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-dev-s390", ver:"2.31-13+deb11u7", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-dev-x32", ver:"2.31-13+deb11u7", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-i386", ver:"2.31-13+deb11u7", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-mips32", ver:"2.31-13+deb11u7", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-mips64", ver:"2.31-13+deb11u7", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-mipsn32", ver:"2.31-13+deb11u7", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-s390", ver:"2.31-13+deb11u7", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-udeb", ver:"2.31-13+deb11u7", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-x32", ver:"2.31-13+deb11u7", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-xen", ver:"2.31-13+deb11u7", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"locales", ver:"2.31-13+deb11u7", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"locales-all", ver:"2.31-13+deb11u7", rls:"DEB11"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"nscd", ver:"2.31-13+deb11u7", rls:"DEB11"))) {
    report += res;
  }

  if(report != "") {
    security_message(data:report);
  } else if(__pkg_match) {
    exit(99);
  }
  exit(0);
}

if(release == "DEB12") {

  if(!isnull(res = isdpkgvuln(pkg:"glibc-doc", ver:"2.36-9+deb12u3", rls:"DEB12"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"glibc-source", ver:"2.36-9+deb12u3", rls:"DEB12"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc-bin", ver:"2.36-9+deb12u3", rls:"DEB12"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc-dev-bin", ver:"2.36-9+deb12u3", rls:"DEB12"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc-devtools", ver:"2.36-9+deb12u3", rls:"DEB12"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc-l10n", ver:"2.36-9+deb12u3", rls:"DEB12"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6", ver:"2.36-9+deb12u3", rls:"DEB12"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-amd64", ver:"2.36-9+deb12u3", rls:"DEB12"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-dbg", ver:"2.36-9+deb12u3", rls:"DEB12"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-dev", ver:"2.36-9+deb12u3", rls:"DEB12"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-dev-amd64", ver:"2.36-9+deb12u3", rls:"DEB12"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-dev-i386", ver:"2.36-9+deb12u3", rls:"DEB12"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-dev-mips32", ver:"2.36-9+deb12u3", rls:"DEB12"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-dev-mips64", ver:"2.36-9+deb12u3", rls:"DEB12"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-dev-mipsn32", ver:"2.36-9+deb12u3", rls:"DEB12"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-dev-s390", ver:"2.36-9+deb12u3", rls:"DEB12"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-dev-x32", ver:"2.36-9+deb12u3", rls:"DEB12"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-i386", ver:"2.36-9+deb12u3", rls:"DEB12"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-mips32", ver:"2.36-9+deb12u3", rls:"DEB12"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-mips64", ver:"2.36-9+deb12u3", rls:"DEB12"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-mipsn32", ver:"2.36-9+deb12u3", rls:"DEB12"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-s390", ver:"2.36-9+deb12u3", rls:"DEB12"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-udeb", ver:"2.36-9+deb12u3", rls:"DEB12"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"libc6-x32", ver:"2.36-9+deb12u3", rls:"DEB12"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"locales", ver:"2.36-9+deb12u3", rls:"DEB12"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"locales-all", ver:"2.36-9+deb12u3", rls:"DEB12"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"nscd", ver:"2.36-9+deb12u3", rls:"DEB12"))) {
    report += res;
  }

  if(report != "") {
    security_message(data:report);
  } else if(__pkg_match) {
    exit(99);
  }
  exit(0);
}

exit(0);

CVSS3

7.8

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

AI Score

7.6

Confidence

High

EPSS

0.016

Percentile

87.4%