SharpZipLib up to 1.3.2 File Creation _baseDirectory path traversal
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
5.5 | $0-$5k | 0.00 |
A vulnerability has been found in SharpZipLib up to 1.3.2 and classified as critical. This vulnerability affects some unknown functionality of the component File Creation Handler. The manipulation of the argument _baseDirectory
with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality, integrity, and availability.
The weakness was shared 01/27/2022 as GHSL-2021-125. The advisory is shared for download at securitylab.github.com. This vulnerability was named CVE-2021-32842 since 05/12/2021. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1006.
Upgrading to version 1.3.3 eliminates this vulnerability. The upgrade is hosted for download at github.com.
Product
Name
Version
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.7VulDB Meta Temp Score: 5.5
VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍
CNA Base Score: 4.0
CNA Vector (GitHub, Inc.): 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: Path traversalCWE: CWE-22
ATT&CK: T1006
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: SharpZipLib 1.3.3
Timeline
05/12/2021 🔍01/27/2022 🔍
01/27/2022 🔍
01/29/2022 🔍
Sources
Advisory: GHSL-2021-125Status: Confirmed
Confirmation: 🔍
CVE: CVE-2021-32842 (🔍)
Entry
Created: 01/27/2022 10:14Updated: 01/29/2022 11:53
Changes: 01/27/2022 10:14 (51), 01/29/2022 11:53 (2)
Complete: 🔍
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