High severity · published Jun 16, 2022
CVE-2021-3675
synaTEE.signed.dll Out-Of-Bounds Heap Write
7.1
CVSS
0.3%
EPSS
No
On KEV
Description
Improper Input Validation vulnerability in synaTEE.signed.dll of Synaptics Fingerprint Driver allows a local authorized attacker to overwrite a heap tag, with potential loss of confidentiality. This issue affects: Synaptics Synaptics Fingerprint Driver 5.1.xxx.26 versions prior to xxx=340 on x86/64; 5.2.xxxx.26 versions prior to xxxx=3541 on x86/64; 5.2.2xx.26 versions prior to xx=29 on x86/64; 5.2.3xx.26 versions prior to xx=25 on x86/64; 5.3.xxxx.26 versions prior to xxxx=3543 on x86/64; 5.5.xx.1058 versions prior to xx=44 on x86/64; 5.5.xx.1102 versions prior to xx=34 on x86/64; 5.5.xx.1116 versions prior to xx=14 on x86/64; 6.0.xx.1104 versions prior to xx=50 on x86/64; 6.0.xx.1108 versions prior to xx=31 on x86/64; 6.0.xx.1111 versions prior to xx=58 on x86/64.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 19% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SF
Synaptics Fingerprint Driver · Synaptics
5.1.xxx.26 before xxx=340; 5.2.xxxx.26 before xxxx=3541; 5.2.2xx.26 before xx=29; 5.2.3xx.26 before xx=25; 5.3.xxxx.26 before xxxx=3543; 5.5.xx.1058 before xx=44; +5 more · source: vendor
FD
Fingerprint Driver · Synaptics
5.1.000.26 before 5.1.340.26; 5.2.0000.26 before 5.2.3541.26; 5.2.200.26 before 5.2.229.26; 5.2.300.26 before 5.2.325.26; 5.3.0000.26 before 5.3.3543.26; 5.5.00.1058 before 5.5.44.1058; +3 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-3675
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-3675
Patch
https://support.hp.com/us-en/document/ish_6411153-6411191-16/hpsbhf03797
Third Party Advisory
https://support.lenovo.com/us/en/product_security/LEN-68054
Vendor Advisory
https://synaptics.com/sites/default/files/2022-06/fingerprint-driver-SGX-security-brief-2022-06-14.pdf
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