CVE-2022-23645
Out-of-bounds read in swtpm
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
swtpm is a libtpms-based TPM emulator with socket, character device, and Linux CUSE interface. Versions prior to 0.5.3, 0.6.2, and 0.7.1 are vulnerable to out-of-bounds read. A specially crafted header of swtpm's state, where the blobheader's hdrsize indicator has an invalid value, may cause an out-of-bounds access when the byte array representing the state of the TPM is accessed. This will likely crash swtpm or prevent it from starting since the state cannot be understood. Users should upgrade to swtpm v0.5.3, v0.6.2, or v0.7.1 to receive a patch. There are currently no known workarounds.
swtpm es un emulador de TPM basado en libtpms con socket, dispositivo de caracteres e interfaz Linux CUSE. Las versiones anteriores a 0.5.3, 0.6.2 y 0.7.1, son vulnerables a una lectura fuera de límites. Un encabezado especialmente diseñado del estado de swtpm, donde el indicador hdrsize del blobheader presenta un valor no válido, puede causar un acceso fuera de límites cuando es accedido al array de bytes que representa el estado del TPM. Esto probablemente bloqueará swtpm o impedirá que sea iniciado ya que el estado no puede ser entendido. Los usuarios deben actualizar a swtpm versión v0.5.3, v0.6.2, o v0.7.1 para recibir un parche. Actualmente no se presentan medidas de mitigación conocidas
An out-of-bounds read vulnerability was found in swtpm. The vulnerability exists due to a boundary condition when the byte array representing the state of the TPM is accessed. This flaw allows an attacker to send a specially crafted header, triggering an out-of-bounds read access on the byte array containing the TPM's state. This issue can crash swtpm or prevent it from starting.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2022-01-19 CVE Reserved
- 2022-02-18 CVE Published
- 2023-05-26 EPSS Updated
- 2024-08-03 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-125: Out-of-bounds Read
CAPEC
References (8)
URL | Tag | Source |
---|---|---|
https://github.com/stefanberger/swtpm/releases/tag/v0.5.3 | Release Notes | |
https://github.com/stefanberger/swtpm/releases/tag/v0.6.2 | Release Notes | |
https://github.com/stefanberger/swtpm/releases/tag/v0.7.1 | Release Notes |
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 |
Swtpm Project Search vendor "Swtpm Project" | Swtpm Search vendor "Swtpm Project" for product "Swtpm" | < 0.5.3 Search vendor "Swtpm Project" for product "Swtpm" and version " < 0.5.3" | - |
Affected
| ||||||
Swtpm Project Search vendor "Swtpm Project" | Swtpm Search vendor "Swtpm Project" for product "Swtpm" | >= 0.6.0 < 0.6.2 Search vendor "Swtpm Project" for product "Swtpm" and version " >= 0.6.0 < 0.6.2" | - |
Affected
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Swtpm Project Search vendor "Swtpm Project" | Swtpm Search vendor "Swtpm Project" for product "Swtpm" | 0.7.0 Search vendor "Swtpm Project" for product "Swtpm" and version "0.7.0" | - |
Affected
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Swtpm Project Search vendor "Swtpm Project" | Swtpm Search vendor "Swtpm Project" for product "Swtpm" | 0.7.0 Search vendor "Swtpm Project" for product "Swtpm" and version "0.7.0" | rc1 |
Affected
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Swtpm Project Search vendor "Swtpm Project" | Swtpm Search vendor "Swtpm Project" for product "Swtpm" | 0.7.0 Search vendor "Swtpm Project" for product "Swtpm" and version "0.7.0" | rc2 |
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" | - |
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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