CVE-2017-1000371
Linux Kernel - 'offset2lib' Stack Clash
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
2Exploited in Wild
-Decision
Descriptions
The offset2lib patch as used by the Linux Kernel contains a vulnerability, if RLIMIT_STACK is set to RLIM_INFINITY and 1 Gigabyte of memory is allocated (the maximum under the 1/4 restriction) then the stack will be grown down to 0x80000000, and as the PIE binary is mapped above 0x80000000 the minimum distance between the end of the PIE binary's read-write segment and the start of the stack becomes small enough that the stack guard page can be jumped over by an attacker. This affects Linux Kernel version 4.11.5. This is a different issue than CVE-2017-1000370 and CVE-2017-1000365. This issue appears to be limited to i386 based systems.
El parche offset2lib tal como es usado por el Kernel de Linux contiene una vulnerabilidad, si RLIMIT_STACK se establece en RLIM_INFINITY y se asigna 1 gigabyte de memoria (el máximo bajo la restricción de 1/4) entonces la pila se reducirá hasta 0x80000000, y como el binario PIE es asignado por encima de 0x80000000 la distancia mínima entre el final del segmento de lectura y escritura del binario PIE y el inicio de la pila se convierte en lo suficientemente pequeño como para que la página de protección de pila puede ser saltada por un atacante. Esto afecta al Kernel de Linux versión 4.11.5. Este es un problema diferente a los CVE-2017-1000370 y CVE-2017-1000365. Este problema parece estar limitado a los sistemas basados en i386.
A flaw was found in the Linux kernel's implementation of mapping ELF PIE binary loading to allow evasion of the stack-guard page protection mechanisms that intend to mitigate this behavior. This issue appears to be limited to i386 based systems.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2017-06-19 CVE Reserved
- 2017-06-19 CVE Published
- 2023-03-08 EPSS Updated
- 2024-08-05 CVE Updated
- 2024-08-05 First Exploit
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-20: Improper Input Validation
CAPEC
References (7)
| URL | Tag | Source |
|---|---|---|
| http://www.securityfocus.com/bid/99131 | Third Party Advisory | |
| https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt | Third Party Advisory |
| URL | Date | SRC |
|---|---|---|
| https://www.exploit-db.com/exploits/42273 | 2024-08-05 | |
| https://www.exploit-db.com/exploits/42276 | 2024-08-05 |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| http://www.debian.org/security/2017/dsa-3981 | 2023-01-17 | |
| https://access.redhat.com/security/cve/CVE-2017-1000371 | 2020-04-22 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1462158 | 2020-04-22 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.1 < 4.1.43 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.1 < 4.1.43" | - |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.2 < 4.4.78 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.2 < 4.4.78" | - |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.5 < 4.9.39 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.5 < 4.9.39" | - |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.10 < 4.11.12 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.10 < 4.11.12" | - |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.12 < 4.12.3 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.12 < 4.12.3" | - |
Affected
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