CVE-2021-33285
ntfs-3g: Out-of-bounds heap buffer access in ntfs_get_attribute_value() due to incorrect check of bytes_in_use value in MFT records
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In NTFS-3G versions < 2021.8.22, when a specially crafted NTFS attribute is supplied to the function ntfs_get_attribute_value, a heap buffer overflow can occur allowing for memory disclosure or denial of service. The vulnerability is caused by an out-of-bound buffer access which can be triggered by mounting a crafted ntfs partition. The root cause is a missing consistency check after reading an MFT record : the "bytes_in_use" field should be less than the "bytes_allocated" field. When it is not, the parsing of the records proceeds into the wild.
En NTFS-3G versiones anteriores a 2021.8.22, cuando es suministrado un atributo NTFS especialmente diseñado a la función ntfs_get_attribute_value, puede ocurrir un desbordamiento del búfer de la pila, permitiendo una divulgación de memoria o una denegación de servicio. La vulnerabilidad es causada por un acceso al búfer fuera de límites que puede ser desencadenado al montar una partición ntfs diseñada. La causa principal es una falta de comprobación de consistencia después de leer un registro MFT: el campo "bytes_in_use" debería ser menor que el campo "bytes_allocated". Cuando no lo es, el análisis de los registros procede de forma salvaje
The ntfs3g package is susceptible to a heap overflow on crafted input. When processing NTFS attributes, proper bounds checking was not enforced leading to this software flaw. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2021-05-20 CVE Reserved
- 2021-09-07 CVE Published
- 2023-03-08 EPSS Updated
- 2024-08-03 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
- CWE-787: Out-of-bounds Write
CAPEC
References (11)
| URL | Tag | Source |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2021/08/30/1 | Mailing List |
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| https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=988386 | Issue Tracking | |
| https://github.com/tuxera/ntfs-3g/security/advisories/GHSA-q759-8j5v-q5jp | Third Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2021/11/msg00013.html | Mailing List |
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| https://www.openwall.com/lists/oss-security/2021/08/30/1 | Mailing List |
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Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
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| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Tuxera Search vendor "Tuxera" | Ntfs-3g Search vendor "Tuxera" for product "Ntfs-3g" | < 2021.8.22 Search vendor "Tuxera" for product "Ntfs-3g" and version " < 2021.8.22" | - |
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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| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 8.0 Search vendor "Redhat" for product "Enterprise Linux" and version "8.0" | - |
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| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 8.0 Search vendor "Redhat" for product "Enterprise Linux" and version "8.0" | advanced_virtualization |
Affected
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| Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 33 Search vendor "Fedoraproject" for product "Fedora" and version "33" | - |
Affected
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| Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 34 Search vendor "Fedoraproject" for product "Fedora" and version "34" | - |
Affected
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| Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 35 Search vendor "Fedoraproject" for product "Fedora" and version "35" | - |
Affected
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| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0" | - |
Affected
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| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0" | - |
Affected
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| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 11.0 Search vendor "Debian" for product "Debian Linux" and version "11.0" | - |
Affected
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