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HistoryJul 10, 2024 - 12:00 a.m.

Ubuntu: Security Advisory (USN-6887-1)

2024-07-1000:00:00
Copyright (C) 2024 Greenbone AG
plugins.openvas.org
3
ubuntu
security advisory
openssh
vulnerability
update
timing information
remote host

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

AI Score

7.5

Confidence

Low

EPSS

0

Percentile

10.7%

The remote host is missing an update for the

# SPDX-FileCopyrightText: 2024 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("1.3.6.1.4.1.25623.1.1.12.2024.6887.1");
  script_cve_id("CVE-2024-39894");
  script_tag(name:"creation_date", value:"2024-07-10 04:09:27 +0000 (Wed, 10 Jul 2024)");
  script_version("2024-07-10T05:05:27+0000");
  script_tag(name:"last_modification", value:"2024-07-10 05:05:27 +0000 (Wed, 10 Jul 2024)");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:N/A:N");

  script_name("Ubuntu: Security Advisory (USN-6887-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2024 Greenbone AG");
  script_family("Ubuntu Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/ubuntu_linux", "ssh/login/packages", re:"ssh/login/release=UBUNTU24\.04\ LTS");

  script_xref(name:"Advisory-ID", value:"USN-6887-1");
  script_xref(name:"URL", value:"https://ubuntu.com/security/notices/USN-6887-1");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'openssh' package(s) announced via the USN-6887-1 advisory.");

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

  script_tag(name:"insight", value:"Philippos Giavridis, Jacky Wei En Kung, Daniel Hugenroth, and Alastair
Beresford discovered that the OpenSSH ObscureKeystrokeTiming feature did
not work as expected. A remote attacker could possibly use this issue to
determine timing information about keystrokes.");

  script_tag(name:"affected", value:"'openssh' package(s) on Ubuntu 24.04.");

  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 == "UBUNTU24.04 LTS") {

  if(!isnull(res = isdpkgvuln(pkg:"openssh-client", ver:"1:9.6p1-3ubuntu13.4", rls:"UBUNTU24.04 LTS"))) {
    report += res;
  }

  if(!isnull(res = isdpkgvuln(pkg:"openssh-server", ver:"1:9.6p1-3ubuntu13.4", rls:"UBUNTU24.04 LTS"))) {
    report += res;
  }

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

exit(0);

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

AI Score

7.5

Confidence

Low

EPSS

0

Percentile

10.7%