5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.6 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
45.6%
Insufficient boundary checks when decoding JSON in handleBackslash reads out of bounds memory, potentially leading to DOS. This issue affects HHVM 4.45.0, 4.44.0, 4.43.0, 4.42.0, 4.41.0, 4.40.0, 4.39.0, versions between 4.33.0 and 4.38.0 (inclusive), versions between 4.9.0 and 4.32.0 (inclusive), and versions prior to 4.8.7.
[
{
"product": "HHVM",
"vendor": "Facebook",
"versions": [
{
"status": "affected",
"version": "4.45.1"
},
{
"status": "affected",
"version": "4.45.0"
},
{
"status": "affected",
"version": "4.44.1"
},
{
"status": "affected",
"version": "4.44.0"
},
{
"status": "affected",
"version": "4.43.1"
},
{
"status": "affected",
"version": "4.43.0"
},
{
"status": "affected",
"version": "4.42.1"
},
{
"status": "affected",
"version": "4.42.0"
},
{
"status": "affected",
"version": "4.41.1"
},
{
"status": "affected",
"version": "4.41.0"
},
{
"status": "affected",
"version": "4.40.1"
},
{
"status": "affected",
"version": "4.40.0"
},
{
"status": "affected",
"version": "4.39.1"
},
{
"status": "affected",
"version": "4.39.0"
},
{
"status": "affected",
"version": "4.38.1"
},
{
"lessThan": "unspecified",
"status": "affected",
"version": "4.33.0",
"versionType": "custom"
},
{
"status": "affected",
"version": "4.32.1"
},
{
"lessThan": "unspecified",
"status": "affected",
"version": "4.9.0",
"versionType": "custom"
},
{
"status": "affected",
"version": "4.8.7"
},
{
"lessThanOrEqual": "4.8.6",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
]
5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.6 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
45.6%