Facebook HHVM up to 4.98.0 crypt stack-based overflow

Summaryinfo

A vulnerability identified as critical has been detected in Facebook HHVM up to 4.98.0. This affects the function crypt. The manipulation leads to stack-based overflow. This vulnerability is uniquely identified as CVE-2020-1921. No exploit exists. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Facebook HHVM up to 4.98.0 (Social Network Software). This issue affects the function crypt. The manipulation with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). Impacted is confidentiality, integrity, and availability.

The weakness was disclosed 03/11/2021. It is possible to read the advisory at hhvm.com. The identification of this vulnerability is CVE-2020-1921. Technical details of the vulnerability are known, but there is no available exploit.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Social Network Software

Vendor

• Facebook

Name

• HHVM

Version

• 4.0
• 4.1
• 4.2
• 4.3
• 4.4
• 4.5
• 4.6
• 4.7
• 4.8
• 4.9
• 4.10
• 4.11
• 4.12
• 4.13
• 4.14
• 4.15
• 4.16
• 4.17
• 4.18
• 4.19
• 4.20
• 4.21
• 4.22
• 4.23
• 4.24
• 4.25
• 4.26
• 4.27
• 4.28
• 4.29
• 4.30
• 4.31
• 4.32
• 4.33
• 4.34
• 4.35
• 4.36
• 4.37
• 4.38
• 4.39
• 4.40
• 4.41
• 4.42
• 4.43
• 4.44
• 4.45
• 4.46
• 4.47
• 4.48
• 4.49
• 4.50
• 4.51
• 4.52
• 4.53
• 4.54
• 4.55
• 4.56
• 4.56.0
• 4.56.1
• 4.56.2
• 4.57
• 4.58
• 4.59
• 4.60
• 4.61
• 4.62
• 4.63
• 4.64
• 4.65
• 4.66
• 4.67
• 4.68
• 4.69
• 4.70
• 4.71
• 4.72
• 4.73
• 4.74
• 4.75
• 4.76
• 4.77
• 4.78
• 4.79
• 4.80
• 4.81
• 4.81.0
• 4.82
• 4.83
• 4.84
• 4.85
• 4.86
• 4.87
• 4.88
• 4.89
• 4.90
• 4.91
• 4.92
• 4.93
• 4.93.0
• 4.94
• 4.94.0
• 4.95
• 4.95.0
• 4.96
• 4.96.0
• 4.97
• 4.97.0
• 4.98.0

License

• free

Website

• Product: https://github.com/facebook/hhvm/

CPE 2.3info

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CPE 2.2info

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