CVE-2015-2877
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
Kernel Samepage Merging (KSM) in the Linux kernel 2.6.32 through 4.x does not prevent use of a write-timing side channel, which allows guest OS users to defeat the ASLR protection mechanism on other guest OS instances via a Cross-VM ASL INtrospection (CAIN) attack. NOTE: the vendor states "Basically if you care about this attack vector, disable deduplication." Share-until-written approaches for memory conservation among mutually untrusting tenants are inherently detectable for information disclosure, and can be classified as potentially misunderstood behaviors rather than vulnerabilities
** DISPUTADA ** Kernel Samepage Merging (KSM) en el kernel de Linux 2.6.32 hasta la versión 4.x no previene el uso de un canal lateral de sincronización de escritura, lo que permite a usuarios invitados del SO derrotar el mecanismo de protección de ASLR en otras instancias invitadas del SO a través de un ataque Cross-VM ASL INtrospection (CAIN). NOTA: el vendedor afirma "Básicamente si te preocupa este vector de ataque, inhabilita la deduplicación". Enfoques de compartir hasta escritura para conservación de memoria entre inquilinos mutuamente desconfiados son inherentemente detectables para divulgación de información y pueden clasificarse como comportamientos potencialmente malinterpretados en lugar de vulnerabilidades.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2015-04-03 CVE Reserved
- 2015-08-06 CVE Published
- 2024-02-04 EPSS Updated
- 2024-08-06 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
CAPEC
References (7)
| URL | Tag | Source |
|---|---|---|
| http://www.antoniobarresi.com/files/cain_advisory.txt | Technical Description | |
| http://www.kb.cert.org/vuls/id/935424 | Third Party Advisory |
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| http://www.securityfocus.com/bid/76256 | Third Party Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1252096 | Issue Tracking | |
| https://www.kb.cert.org/vuls/id/BGAR-A2CNKG | Third Party Advisory |
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| https://www.kb.cert.org/vuls/id/BLUU-9ZAHZH | Third Party Advisory |
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| https://www.usenix.org/system/files/conference/woot15/woot15-paper-barresi.pdf | Technical Description |
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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" | >= 2.6.32 <= 4.20.15 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.32 <= 4.20.15" | - |
Affected
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| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 4.0 Search vendor "Redhat" for product "Enterprise Linux" and version "4.0" | - |
Affected
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| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 5.0 Search vendor "Redhat" for product "Enterprise Linux" and version "5.0" | - |
Affected
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| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 6.0 Search vendor "Redhat" for product "Enterprise Linux" and version "6.0" | - |
Affected
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| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 7.0 Search vendor "Redhat" for product "Enterprise Linux" and version "7.0" | - |
Affected
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