Описание
lrzsz before 0.13.0 contains a path traversal vulnerability in the lrz receive utility's restricted mode that allows malicious ZMODEM senders to write files outside the current directory using absolute pathnames. Because checkpath() in src/lrz.c only rejects '../' sequences unless built with --enable-pubdir, attackers can send files named with absolute paths to overwrite any file writable by the receiving user.
A flaw was found in lrzsz. The lrz receive utility fails to properly sanitize absolute file paths in restricted mode, only checking for relative path traversal sequences. A remote attacker transmitting files can exploit this vulnerability to write or overwrite arbitrary files outside the intended directory with the permissions of the receiving user.
Меры по смягчению последствий
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 6 | lrzsz | Out of support scope | ||
| Red Hat Enterprise Linux 7 | lrzsz | Affected | ||
| Red Hat Enterprise Linux 9 | lrzsz | Affected | ||
| Red Hat Enterprise Linux 10 | lrzsz | Fixed | RHSA-2026:86056 | 20.10.2026 |
| Red Hat Enterprise Linux 8 | lrzsz | Fixed | RHSA-2026:83525 | 15.10.2026 |
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Дополнительная информация
Статус:
EPSS
7.5 High
CVSS3
Связанные уязвимости
lrzsz before 0.13.0 contains a path traversal vulnerability in the lrz receive utility's restricted mode that allows malicious ZMODEM senders to write files outside the current directory using absolute pathnames. Because checkpath() in src/lrz.c only rejects '../' sequences unless built with --enable-pubdir, attackers can send files named with absolute paths to overwrite any file writable by the receiving user.
lrzsz before 0.13.0 contains a path traversal vulnerability in the lrz receive utility's restricted mode that allows malicious ZMODEM senders to write files outside the current directory using absolute pathnames. Because checkpath() in src/lrz.c only rejects '../' sequences unless built with --enable-pubdir, attackers can send files named with absolute paths to overwrite any file writable by the receiving user.
lrzsz before 0.13.0 contains a path traversal vulnerability in the lrz ...
lrzsz before 0.13.0 contains a path traversal vulnerability in the lrz receive utility's restricted mode that allows malicious ZMODEM senders to write files outside the current directory using absolute pathnames. Because checkpath() in src/lrz.c only rejects '../' sequences unless built with --enable-pubdir, attackers can send files named with absolute paths to overwrite any file writable by the receiving user.
EPSS
7.5 High
CVSS3