Debian: Security Advisory (DSA-5558-1)

# 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("1.3.6.1.4.1.25623.1.1.1.1.2023.5558");
  script_cve_id("CVE-2023-34462", "CVE-2023-44487");
  script_tag(name:"creation_date", value:"2023-11-20 04:23:43 +0000 (Mon, 20 Nov 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:"7.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2023-10-13 19:32:37 +0000 (Fri, 13 Oct 2023)");

  script_name("Debian: Security Advisory (DSA-5558-1)");
  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-5558-1");
  script_xref(name:"URL", value:"https://www.debian.org/security/2023/DSA-5558-1");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-5558");
  script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/netty");

  script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'netty' package(s) announced via the DSA-5558-1 advisory.");

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

  script_tag(name:"insight", value:"Two security vulnerabilities have been discovered in Netty, a Java NIO client/server socket framework.

CVE-2023-34462

It might be possible for a remote peer to send a client hello packet during a TLS handshake which lead the server to buffer up to 16 MB of data per connection. This could lead to a OutOfMemoryError and so result in a denial of service.

CVE-2023-44487

The HTTP/2 protocol allowed a denial of service (server resource consumption) because request cancellation can reset many streams quickly. This problem is also known as Rapid Reset Attack.

For the oldstable distribution (bullseye), these problems have been fixed in version 1:4.1.48-4+deb11u2.

For the stable distribution (bookworm), these problems have been fixed in version 1:4.1.48-7+deb12u1.

We recommend that you upgrade your netty packages.

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

  script_tag(name:"affected", value:"'netty' 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:"libnetty-java", ver:"1:4.1.48-4+deb11u2", 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:"libnetty-java", ver:"1:4.1.48-7+deb12u1", rls:"DEB12"))) {
    report += res;
  }

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

exit(0);