CVE-2020-28374
kernel: SCSI target (LIO) write to any block on ILO backstore
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In drivers/target/target_core_xcopy.c in the Linux kernel before 5.10.7, insufficient identifier checking in the LIO SCSI target code can be used by remote attackers to read or write files via directory traversal in an XCOPY request, aka CID-2896c93811e3. For example, an attack can occur over a network if the attacker has access to one iSCSI LUN. The attacker gains control over file access because I/O operations are proxied via an attacker-selected backstore.
En el archivo drivers/target/target_core_xcopy.c en el kernel de Linux versiones anteriores a 5.10.7, unos atacantes remotos pueden usar una comprobación del identificador insuficiente en el código de destino LIO SCSI para leer o escribir archivos por medio de un salto de directorio en una petición XCOPY, también se conoce como CID-2896c93811e3. Por ejemplo, un ataque puede ocurrir en una red si el atacante presenta acceso a un iSCSI LUN. El atacante obtiene el control sobre el acceso a los archivos porque las operaciones de E/S son transferidas por medio de un almacén secundario seleccionado por el atacante.
A flaw was found in the Linux kernel’s implementation of the Linux SCSI target host, where an authenticated attacker could write to any block on the exported SCSI device backing store. This flaw allows an authenticated attacker to send LIO block requests to the Linux system to overwrite data on the backing store. The highest threat from this vulnerability is to integrity. In addition, this flaw affects the tcmu-runner package, where the affected SCSI command is called.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2020-11-10 CVE Reserved
- 2021-01-13 CVE Published
- 2024-05-18 EPSS Updated
- 2024-08-04 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-20: Improper Input Validation
- CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CAPEC
References (17)
| URL | Tag | Source |
|---|---|---|
| http://packetstormsecurity.com/files/161229/Kernel-Live-Patch-Security-Notice-LSN-0074-1.html | Third Party Advisory |
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| http://www.openwall.com/lists/oss-security/2021/01/13/2 | Mailing List |
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| http://www.openwall.com/lists/oss-security/2021/01/13/5 | Mailing List |
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| https://bugzilla.suse.com/attachment.cgi?id=844938 | Issue Tracking | |
| https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html | Mailing List |
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| https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html | Mailing List |
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| https://security.netapp.com/advisory/ntap-20210219-0002 | Third Party Advisory |
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| URL | Date | SRC |
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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" | < 5.10.7 Search vendor "Linux" for product "Linux Kernel" and version " < 5.10.7" | - |
Affected
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| Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 32 Search vendor "Fedoraproject" for product "Fedora" and version "32" | - |
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" | - |
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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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