Описание
lrzsz before 0.13.0 contains an OS command injection vulnerability in the lrz receive utility's pipe mode that allows remote senders to execute commands by supplying crafted filenames. When lrz runs under a suffixed name such as lrztar, procheader() in src/lrz.c passes the unescaped ZMODEM/YMODEM filename to popen(), so shell metacharacters execute as the receiving user.
A flaw was found in lrzsz. When operating in pipe mode, the lrz receive utility does not properly sanitize file names received during file transfers before passing them to the system shell. A remote attacker can exploit this flaw by sending a specially crafted file name, leading to arbitrary command execution 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 | Not affected | ||
| 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 an OS command injection vulnerability in the lrz receive utility's pipe mode that allows remote senders to execute commands by supplying crafted filenames. When lrz runs under a suffixed name such as lrztar, procheader() in src/lrz.c passes the unescaped ZMODEM/YMODEM filename to popen(), so shell metacharacters execute as the receiving user.
lrzsz before 0.13.0 contains an OS command injection vulnerability in the lrz receive utility's pipe mode that allows remote senders to execute commands by supplying crafted filenames. When lrz runs under a suffixed name such as lrztar, procheader() in src/lrz.c passes the unescaped ZMODEM/YMODEM filename to popen(), so shell metacharacters execute as the receiving user.
lrzsz before 0.13.0 contains an OS command injection vulnerability in ...
lrzsz before 0.13.0 contains an OS command injection vulnerability in the lrz receive utility's pipe mode that allows remote senders to execute commands by supplying crafted filenames. When lrz runs under a suffixed name such as lrztar, procheader() in src/lrz.c passes the unescaped ZMODEM/YMODEM filename to popen(), so shell metacharacters execute as the receiving user.
EPSS
7.5 High
CVSS3