Fedora 46 : baresip / libre (2026-b8539090fe)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##
# The descriptive text and package checks in this plugin were
# extracted from Fedora Security Advisory FEDORA-2026-b8539090fe
#

include('compat.inc');

if (description)
{
  script_id(362869);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/03");
  script_xref(name:"FEDORA", value:"2026-b8539090fe");

  script_name(english:"Fedora 46 : baresip / libre (2026-b8539090fe)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Fedora host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Fedora 46 host has packages installed that are affected by a vulnerability as referenced in the
FEDORA-2026-b8539090fe advisory.

    # Baresip v4.12.0 (2026-09-30)
     - Feature: Send Custom `X-Headers` on Outbound Calls
     - audio: thread-safe usage of psize and ptime in `tx_thread()`
     - jbuf: safer `jbuf_set_id`
     - audio: add mutex lock for aubuf statistics
     - test: add testing of peerconn and vidfilt
     - audio: fix format name in ausrc format mismatch warning
     - ci: remove brew fdk-aac package (discontinued)
     - test: fix peerconn and vidfilt
     - cmake: use variable for libdir `libbaresip.pc.in`
     - aureceiver: stats cleanup
     - rtprecv: tiny cleanup for startup
     - rtprecv: add stop flag fixes race condition
     - auresamp: alloc for implicit format conversion
     - aureceiver: fix decoder sample format and cleanup
     - audio: use `RE_ATOMIC` for muted flag
     - gst,play: fix err handling

    # libre v4.12.0 (2026-09-30)
     - [OOB write in AV1 DD decoder template_fdiffs() via unbounded while
    loop](https://github.com/baresip/re/security/advisories/GHSA-rp4v-6hwc-3w8j)
     - [TLS certificate identity check is skipped when the peer is addressed by IP literal: any CA-issued cert
    is accepted and reported as
    verified](https://github.com/baresip/re/security/advisories/GHSA-7h33-mhw5-7pwr)
     - json,odict: optimize memory and lookup performance
     - sys: add `sys_exec`, `sys_texec` and `sys_cexec` (UNIX only)
     - sip/transp: verify WSS server identity against the target host
     - fmt/pl: optimize `pl_strstr`, `pl_strchr` and `pl_strrchr`
     - cmake: use variable for libdir in `libbaresip.pc.in`
     - sipreg/sipreg_unregister: call response handler on error
     - tls,test: add strict IP-literal SAN TLS verification (no SNI)
     - dd: implement out of bound checks
     - base64: fix not detected `base64_decode` olen overflow
     - httpauth/digest: fix MD5 default hash handler

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://bodhi.fedoraproject.org/updates/FEDORA-2026-b8539090fe");
  script_set_attribute(attribute:"solution", value:
"Update the affected baresip and / or libre packages.");
  script_set_attribute(attribute:"risk_factor", value:"High");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/10/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/10/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/03");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:46");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:baresip");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:libre");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}


include('rpm2.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_product = get_kb_item('installed_os/local/SSH/0/product');
if (isnull(os_product) || 'Fedora' >!< os_product) audit(AUDIT_OS_NOT, 'Fedora');
var os_version = get_kb_item('installed_os/local/SSH/0/version');
if (isnull(os_version)) audit(AUDIT_UNKNOWN_APP_VER, 'Fedora');
if (! preg(pattern:"^46([^0-9]|$)", string:os_version)) audit(AUDIT_OS_NOT, 'Fedora 46', 'Fedora ' + os_version);

if (!get_kb_item('Host/RedHat/rpm-list')) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Fedora', cpu);

var constraints = [
  {
    'release': '46',
    'pkgs': [
      {'reference':'baresip-4.12.0-1.fc46', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'libre-4.12.0-1.fc46', 'rpm_spec_vers_cmp':TRUE}
    ]
  }
];

var os_release = get_one_kb_item('installed_os/local/SSH/0/release');
var os_sp = get_one_kb_item('Host/*/minor_release');

var flag = 0;
var reference;
var sp;
var _cpu;
var el_string;
var rpm_spec_vers_cmp;
var epoch;
var allowmaj;
var exists_check;
var cves;
foreach var constraint ( constraints ) {
  # Check that the target release is equal to the affected release
  if (!empty_or_null(constraint['release'])){
    if (constraint['release'] != os_release) continue;
  }
  if (!empty_or_null(constraint['sp'])){
    if (constraint['sp'] != os_sp) continue;
  }
  foreach var pkg ( constraint['pkgs'] ) {
    reference = NULL;
    sp = NULL;
    _cpu = NULL;
    el_string = NULL;
    rpm_spec_vers_cmp = NULL;
    epoch = NULL;
    allowmaj = NULL;
    exists_check = NULL;
    cves = NULL;
    if (!empty_or_null(pkg['reference'])) reference = pkg['reference'];
    if (!empty_or_null(pkg['sp'])) sp = pkg['sp'];
    if (!empty_or_null(pkg['cpu'])) _cpu = pkg['cpu'];
    if (!empty_or_null(pkg['el_string'])) el_string = pkg['el_string'];
    if (!empty_or_null(pkg['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = pkg['rpm_spec_vers_cmp'];
    if (!empty_or_null(pkg['epoch'])) epoch = pkg['epoch'];
    if (!empty_or_null(pkg['allowmaj'])) allowmaj = pkg['allowmaj'];
    if (!empty_or_null(pkg['exists_check'])) exists_check = pkg['exists_check'];
    if (!empty_or_null(pkg['cves'])) cves = pkg['cves'];
    if (reference &&
        ## (no known rpm to check OR known rpm_exists)
        (!exists_check || rpm_exists(rpm:exists_check)) &&
        rpm_check(sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj, cves:cves)) flag++;
  }
}

if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'baresip / libre');
}