Juniper Junos OS Multiple Vulnerabilities (JSA79108)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(193216);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/27");

  script_cve_id(
    "CVE-2018-1000120",
    "CVE-2018-1000122",
    "CVE-2020-8284",
    "CVE-2020-8285",
    "CVE-2020-8286",
    "CVE-2023-23914",
    "CVE-2023-23915",
    "CVE-2023-38545",
    "CVE-2023-38546"
  );
  script_xref(name:"JSA", value:"JSA79108");
  script_xref(name:"CEA-ID", value:"CEA-2021-0025");
  script_xref(name:"CEA-ID", value:"CEA-2023-0052");
  script_xref(name:"IAVA", value:"2024-A-0232");

  script_name(english:"Juniper Junos OS Multiple Vulnerabilities (JSA79108)");

  script_set_attribute(attribute:"synopsis", value:
"The remote device is missing a vendor-supplied security patch.");
  script_set_attribute(attribute:"description", value:
"The version of Junos OS installed on the remote host is affected by multiple vulnerabilities as referenced in the
JSA79108 advisory.

  - This flaw makes curl overflow a heap based buffer in the SOCKS5 proxy handshake. When curl is asked to
    pass along the host name to the SOCKS5 proxy to allow that to resolve the address instead of it getting
    done by curl itself, the maximum length that host name can be is 255 bytes. If the host name is detected
    to be longer, curl switches to local name resolving and instead passes on the resolved address only. Due
    to this bug, the local variable that means let the host resolve the name could get the wrong value
    during a slow SOCKS5 handshake, and contrary to the intention, copy the too long host name to the target
    buffer instead of copying just the resolved address there. The target buffer being a heap based buffer,
    and the host name coming from the URL that curl has been told to operate with. (CVE-2023-38545)

  - CVE-2023-38545 is a heap-based buffer overflow vulnerability in the SOCKS5 proxy handshake in libcurl and
    curl.  When curl is given a hostname to pass along to a SOCKS5 proxy that is greater than 255 bytes in
    length, it will switch to local name resolution in order to resolve the address before passing it on to
    the SOCKS5 proxy. However, due to a bug introduced in 2020, this local name resolution could fail due to a
    slow SOCKS5 handshake, causing curl to pass on the hostname greater than 255 bytes in length into the
    target buffer, leading to a heap overflow.  The advisory for CVE-2023-38545 gives an example exploitation
    scenario of a malicious HTTPS server redirecting to a specially crafted URL. While it might seem that an
    attacker would need to influence the slowness of the SOCKS5 handshake, the advisory states that server
    latency is likely slow enough to trigger this bug. (CVE-2023-38545)

  - This flaw allows an attacker to insert cookies at will into a running program using libcurl, if the
    specific series of conditions are met. libcurl performs transfers. In its API, an application creates
    easy handles that are the individual handles for single transfers. libcurl provides a function call that
    duplicates en easy handle called
    [curl_easy_duphandle](https://curl.se/libcurl/c/curl_easy_duphandle.html). If a transfer has cookies
    enabled when the handle is duplicated, the cookie-enable state is also cloned - but without cloning the
    actual cookies. If the source handle did not read any cookies from a specific file on disk, the cloned
    version of the handle would instead store the file name as `none` (using the four ASCII letters, no
    quotes). Subsequent use of the cloned handle that does not explicitly set a source to load cookies from
    would then inadvertently load cookies from a file named `none` - if such a file exists and is readable in
    the current directory of the program using libcurl. And if using the correct file format of course.
    (CVE-2023-38546)

  - CVE-2023-38546 is a cookie injection vulnerability in the curl_easy_duphandle(), a function in libcurl
    that duplicates easy handles.  When duplicating an easy handle, if cookies are enabled, the duplicated
    easy handle will not duplicate the cookies themselves, but would instead set the filename to none.'
    Therefore, when the duplicated easy handle is subsequently used, if a source was not set for the cookies,
    libcurl would attempt to load them from the file named none' on the disk.  This vulnerability is rated
    low, as the various conditions required for exploitation are unlikely.  (CVE-2023-38546)

  - A cleartext transmission of sensitive information vulnerability exists in curl <v7.88.0 that could cause
    HSTS functionality fail when multiple URLs are requested serially. Using its HSTS support, curl can be
    instructed to use HTTPS instead of usingan insecure clear-text HTTP step even when HTTP is provided in the
    URL. ThisHSTS mechanism would however surprisingly be ignored by subsequent transferswhen done on the same
    command line because the state would not be properlycarried on. (CVE-2023-23914)

  - A cleartext transmission of sensitive information vulnerability exists in curl <v7.88.0 that could cause
    HSTS functionality to behave incorrectly when multiple URLs are requested in parallel. Using its HSTS
    support, curl can be instructed to use HTTPS instead of using an insecure clear-text HTTP step even when
    HTTP is provided in the URL. This HSTS mechanism would however surprisingly fail when multiple transfers
    are done in parallel as the HSTS cache file gets overwritten by the most recentlycompleted transfer. A
    later HTTP-only transfer to the earlier host name would then *not* get upgraded properly to HSTS.
    (CVE-2023-23915)

  - A malicious server can use the FTP PASV response to trick curl 7.73.0 and earlier into connecting back to
    a given IP address and port, and this way potentially make curl extract information about services that
    are otherwise private and not disclosed, for example doing port scanning and service banner extractions.
    (CVE-2020-8284)

  - curl 7.21.0 to and including 7.73.0 is vulnerable to uncontrolled recursion due to a stack overflow issue
    in FTP wildcard match parsing. (CVE-2020-8285)

  - curl 7.41.0 through 7.73.0 is vulnerable to an improper check for certificate revocation due to
    insufficient verification of the OCSP response. (CVE-2020-8286)

  - A buffer overflow exists in curl 7.12.3 to and including curl 7.58.0 in the FTP URL handling that allows
    an attacker to cause a denial of service or worse. (CVE-2018-1000120)

  - A buffer over-read exists in curl 7.20.0 to and including curl 7.58.0 in the RTSP+RTP handling code that
    allows an attacker to cause a denial of service or information leakage (CVE-2018-1000122)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  # https://supportportal.juniper.net/s/article/In-which-releases-are-vulnerabilities-fixed?r=59&ui-knowledge-components-aura-actions.KnowledgeArticleVersionCreateDraftFromOnlineAction.createDraftFromOnlineArticle=1
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?06cd5d1b");
  # https://supportportal.juniper.net/s/article/Common-Vulnerability-Scoring-System-CVSS-and-Juniper-s-Security-Advisories?r=59&ui-knowledge-components-aura-actions.KnowledgeArticleVersionCreateDraftFromOnlineAction.createDraftFromOnlineArticle=1
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?150809e9");
  # https://supportportal.juniper.net/s/article/2024-04-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-Multiple-cURL-vulnerabilities-resolved
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?c07d7e31");
  # https://supportportal.juniper.net/s/article/Overview-of-the-Juniper-Networks-SIRT-Quarterly-Security-Bulletin-Publication-Process?r=59&ui-knowledge-components-aura-actions.KnowledgeArticleVersionCreateDraftFromOnlineAction.createDraftFromOnlineArticle=1
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f118a206");
  script_set_attribute(attribute:"solution", value:
"Apply the relevant Junos software release referenced in Juniper advisory JSA79108");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-1000120");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2023-38545");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/03/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/04/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/04/11");

  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:juniper:junos");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Junos Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("junos_version.nasl");
  script_require_keys("Host/Juniper/JUNOS/Version");

  exit(0);
}

include('junos.inc');


var ver = get_kb_item_or_exit('Host/Juniper/JUNOS/Version');

var vuln_ranges = [
  {'min_ver':'0.0', 'fixed_ver':'21.2R1', 'fixed_display':'21.2R1, 21.4R3-S5, 22.3R2-S2, 22.3R3, 22.4R2-S1, 22.4R3, 23.4R1-S1, 23.4R2'},
  {'min_ver':'0.0', 'fixed_ver':'21.4R3-S4-EVO'},
  {'min_ver':'22.1-EVO', 'fixed_ver':'22.1R3-S4-EVO'},
  {'min_ver':'22.2R3', 'fixed_ver':'22.2R3-S2'},
  {'min_ver':'22.3-EVO', 'fixed_ver':'22.3R3-S1-EVO'},
  {'min_ver':'22.4-EVO', 'fixed_ver':'22.4R2-S1-EVO'}
];

var fix = junos_compare_range(target_version:ver, vuln_ranges:vuln_ranges);
if (empty_or_null(fix)) audit(AUDIT_INST_VER_NOT_VULN, 'Junos OS', ver);
var report = get_report(ver:ver, fix:fix);
security_report_v4(severity:SECURITY_HOLE, port:0, extra:report);