Описание
GNU Bash through 4.3 processes trailing strings after function definitions in the values of environment variables, which allows remote attackers to execute arbitrary code via a crafted environment, as demonstrated by vectors involving the ForceCommand feature in OpenSSH sshd, the mod_cgi and mod_cgid modules in the Apache HTTP Server, scripts executed by unspecified DHCP clients, and other situations in which setting the environment occurs across a privilege boundary from Bash execution, aka "ShellShock." NOTE: the original fix for this issue was incorrect; CVE-2014-7169 has been assigned to cover the vulnerability that is still present after the incorrect fix.
A flaw was found in the way Bash evaluated certain specially crafted environment variables. An attacker could use this flaw to override or bypass environment restrictions to execute shell commands. Certain services and applications allow remote unauthenticated attackers to provide environment variables, allowing them to exploit this issue.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 3 | bash | Affected | ||
| Red Hat Enterprise Linux 4 Extended Lifecycle Support | bash | Fixed | RHSA-2014:1294 | 24.09.2014 |
| Red Hat Enterprise Linux 5 | bash | Fixed | RHSA-2014:1293 | 24.09.2014 |
| Red Hat Enterprise Linux 5.6 Long Life | bash | Fixed | RHSA-2014:1294 | 24.09.2014 |
| Red Hat Enterprise Linux 5.9 Extended Update Support | bash | Fixed | RHSA-2014:1294 | 24.09.2014 |
| Red Hat Enterprise Linux 6 | bash | Fixed | RHSA-2014:1293 | 24.09.2014 |
| Red Hat Enterprise Linux 6.2 Advanced Update Support | bash | Fixed | RHSA-2014:1294 | 24.09.2014 |
| Red Hat Enterprise Linux 6.4 Extended Update Support | bash | Fixed | RHSA-2014:1294 | 24.09.2014 |
| Red Hat Enterprise Linux 7 | bash | Fixed | RHSA-2014:1293 | 24.09.2014 |
| RHEV Manager version 3.4 | rhev-hypervisor6 | Fixed | RHSA-2014:1354 | 02.10.2014 |
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Дополнительная информация
Статус:
7.5 High
CVSS2
Связанные уязвимости
GNU Bash through 4.3 processes trailing strings after function definitions in the values of environment variables, which allows remote attackers to execute arbitrary code via a crafted environment, as demonstrated by vectors involving the ForceCommand feature in OpenSSH sshd, the mod_cgi and mod_cgid modules in the Apache HTTP Server, scripts executed by unspecified DHCP clients, and other situations in which setting the environment occurs across a privilege boundary from Bash execution, aka "ShellShock." NOTE: the original fix for this issue was incorrect; CVE-2014-7169 has been assigned to cover the vulnerability that is still present after the incorrect fix.
GNU Bash through 4.3 processes trailing strings after function definitions in the values of environment variables, which allows remote attackers to execute arbitrary code via a crafted environment, as demonstrated by vectors involving the ForceCommand feature in OpenSSH sshd, the mod_cgi and mod_cgid modules in the Apache HTTP Server, scripts executed by unspecified DHCP clients, and other situations in which setting the environment occurs across a privilege boundary from Bash execution, aka "ShellShock." NOTE: the original fix for this issue was incorrect; CVE-2014-7169 has been assigned to cover the vulnerability that is still present after the incorrect fix.
GNU Bash through 4.3 processes trailing strings after function definit ...
GNU Bash through 4.3 processes trailing strings after function definitions in the values of environment variables, which allows remote attackers to execute arbitrary code via a crafted environment, as demonstrated by vectors involving the ForceCommand feature in OpenSSH sshd, the mod_cgi and mod_cgid modules in the Apache HTTP Server, scripts executed by unspecified DHCP clients, and other situations in which setting the environment occurs across a privilege boundary from Bash execution, aka "ShellShock." NOTE: the original fix for this issue was incorrect; CVE-2014-7169 has been assigned to cover the vulnerability that is still present after the incorrect fix.
7.5 High
CVSS2