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CVE-2026-21620

Опубликовано: 20 фев. 2026
Источник: redhat
CVSS3: 4.2

Описание

Relative Path Traversal, Improper Isolation or Compartmentalization vulnerability in erlang otp erlang/otp (tftp_file modules), erlang otp inets (tftp_file modules), erlang otp tftp (tftp_file modules) allows Relative Path Traversal. This vulnerability is associated with program files lib/tftp/src/tftp_file.erl, src/tftp_file.erl. This issue affects OTP from OTP 17.0 before OTP 28.3.2, OTP 27.3.4.8 and OTP 26.2.5.17, corresponding to tftp from 1.0 before 1.2.4, 1.2.2.1 and 1.1.1.1; also inets from 5.10 before 7.0.

A flaw was found in Erlang OTP tftp_file modules. This vulnerability allows an attacker to exploit a weakness in how file paths are handled, known as Relative Path Traversal. By manipulating these paths, an attacker could gain unauthorized access to sensitive files on the system, potentially leading to information disclosure.

Отчет

This vulnerability has a LOW impact. A relative path traversal flaw in the Erlang/OTP TFTP modules could allow an attacker to access or write files outside the intended TFTP directory. This issue affects systems where the Erlang TFTP service is exposed and actively used.

Меры по смягчению последствий

Restrict network access to the TFTP service to trusted hosts using firewall rules. Ensure the TFTP server is configured to operate within a chroot environment to limit file system access. If the TFTP service is not required, disable it. Example for disabling the TFTP service (if managed by systemd): sudo systemctl stop tftp.service sudo systemctl disable tftp.service Restart the TFTP service after applying any configuration changes for them to take effect.

Затронутые пакеты

ПлатформаПакетСостояниеРекомендацияРелиз
Red Hat OpenStack Platform 16.2erlangFix deferred
Red Hat OpenStack Platform 17.1erlangFix deferred
Red Hat OpenStack Platform 18.0erlangFix deferred

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Дополнительная информация

Статус:

Moderate
Дефект:
CWE-22
https://bugzilla.redhat.com/show_bug.cgi?id=2441326erlang: Erlang OTP tftp_file modules: Information disclosure via relative path traversal

4.2 Medium

CVSS3

Связанные уязвимости

ubuntu
6 месяцев назад

Relative Path Traversal, Improper Isolation or Compartmentalization vulnerability in erlang otp erlang/otp (tftp_file modules), erlang otp inets (tftp_file modules), erlang otp tftp (tftp_file modules) allows Relative Path Traversal. This vulnerability is associated with program files lib/tftp/src/tftp_file.erl, src/tftp_file.erl. This issue affects OTP from OTP 17.0 before OTP 28.3.2, OTP 27.3.4.8 and OTP 26.2.5.17, corresponding to tftp from 1.0 before 1.2.4, 1.2.2.1 and 1.1.1.1; also inets from 5.10 before 7.0.

nvd
6 месяцев назад

Relative Path Traversal, Improper Isolation or Compartmentalization vulnerability in erlang otp erlang/otp (tftp_file modules), erlang otp inets (tftp_file modules), erlang otp tftp (tftp_file modules) allows Relative Path Traversal. This vulnerability is associated with program files lib/tftp/src/tftp_file.erl, src/tftp_file.erl. This issue affects OTP from OTP 17.0 before OTP 28.3.2, OTP 27.3.4.8 and OTP 26.2.5.17, corresponding to tftp from 1.0 before 1.2.4, 1.2.2.1 and 1.1.1.1; also inets from 5.10 before 7.0.

msrc
4 месяца назад

TFTP Path Traversal

debian
6 месяцев назад

Relative Path Traversal, Improper Isolation or Compartmentalization vu ...

suse-cvrf
3 месяца назад

Security update for erlang

4.2 Medium

CVSS3