CVE-2016-8622
CVSS V2 High 7.5
CVSS V3 Critical 9.8
Description
The URL percent-encoding decode function in libcurl before 7.51.0 is called `curl_easy_unescape`. Internally, even if this function would be made to allocate a unscape destination buffer larger than 2GB, it would return that new length in a signed 32 bit integer variable, thus the length would get either just truncated or both truncated and turned negative. That could then lead to libcurl writing outside of its heap based buffer.
Overview
- CVE ID
- CVE-2016-8622
- Assigner
- secalert@redhat.com
- Vulnerability Status
- Modified
- Published Version
- 2018-07-31T21:29:00
- Last Modified Date
- 2018-11-13T11:29:05
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:haxx:libcurl:*:*:*:*:*:*:*:* | 1 | OR | 7.51.0 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:P/I:P/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 7.5
- Severity
- HIGH
- Exploitability Score
- 10
- Impact Score
- 6.4
CVSS Version 3
- Version
- 3.0
- Vector String
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 9.8
- Base Severity
- CRITICAL
- Exploitability Score
- 3.9
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://curl.haxx.se/docs/adv_20161102H.html | Patch Vendor Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-8622 | Issue Tracking Patch Third Party Advisory |
| https://www.tenable.com/security/tns-2016-21 | Third Party Advisory |
| https://security.gentoo.org/glsa/201701-47 | Third Party Advisory |
| http://www.securitytracker.com/id/1037192 | Third Party Advisory VDB Entry |
| http://www.securityfocus.com/bid/94105 | Third Party Advisory VDB Entry |
| https://access.redhat.com/errata/RHSA-2018:2486 | Third Party Advisory |
| http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html | |
| https://access.redhat.com/errata/RHSA-2018:3558 |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2016-8622 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-8622 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 17:53:15 | Added to TrackCVE | |||
| 2022-12-03 10:45:51 | 2018-07-31T21:29Z | 2018-07-31T21:29:00 | CVE Published Date | updated |
| 2022-12-03 10:45:51 | 2018-11-13T11:29:05 | CVE Modified Date | updated | |
| 2022-12-03 10:45:51 | Modified | Vulnerability Status | updated |