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FreeBSD : Erlang/OTP -- SFTP READLINK discloses server filesystem paths (d87e41a4-64d4-11f1-ab11-4c526214c986)

low Nessus Plugin ID 320578

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Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the d87e41a4-64d4-11f1-ab11-4c526214c986 advisory.

 https://github.com/erlang/otp/security/advisories/GHSA-pv7g-pjrq-x2fh reports:
 The SSH SFTP daemon's handling of SSH_FXP_READLINK returned symbolic link targets containing the server's absolute filesystem path, disclosing the backend root prefix to clients.
 The handler now strips the backend root prefix from symlink targets before returning them.

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

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://github.com/erlang/otp/security/advisories/GHSA-pv7g-pjrq-x2fh

http://www.nessus.org/u?43bb46ec

Plugin Details

Severity: Low

ID: 320578

File Name: freebsd_pkg_d87e41a464d411f1ab114c526214c986.nasl

Version: 1.3

Type: Local

Published: 6/11/2026

Updated: 6/16/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.76

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:N/A:N

CVSS Score Source: CVE-2026-48855

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: Low

Base Score: 2.3

Threat Score: 0.6

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:erlang-runtime28, cpe:/o:freebsd:freebsd, p-cpe:/a:freebsd:freebsd:erlang-runtime27, p-cpe:/a:freebsd:freebsd:erlang-runtime29

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Ease: No known exploits are available

Patch Publication Date: 6/10/2026

Vulnerability Publication Date: 6/10/2026

Reference Information

CVE: CVE-2026-48855

IAVA: 2026-A-0594