Linux Kernel 4.3-rc1 x509_cert_parser.c x509_decode_time out-of-bounds read
|CVSS Meta Temp Score|
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|Current Exploit Price (≈)|
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|CTI Interest Score|
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A vulnerability classified as critical was found in Linux Kernel 4.3-rc1 (Operating System). This vulnerability affects the function
x509_decode_time of the file x509_cert_parser.c. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-125. As an impact it is known to affect confidentiality, integrity, and availability.
The bug was discovered 11/27/2015. The weakness was disclosed 09/25/2017 by Federico Bento (oss-sec). The advisory is shared for download at openwall.com. This vulnerability was named CVE-2015-5327 since 07/01/2015. The exploitation appears to be easy. The attack can be initiated remotely. Required for exploitation is a single authentication. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 01/14/2021).
The vulnerability was handled as a non-public zero-day exploit for at least 668 days. During that time the estimated underground price was around $5k-$25k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 157983 (Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel (ELSA-2019-4642)).
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
CVSSv3VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.4
VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 6.5
NVD Vector: 🔍
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
ExploitingClass: Information disclosure
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔍
Qualys ID: 🔍
Qualys Name: 🔍
Threat IntelligenceThreat: 🔍
CountermeasuresRecommended: no mitigation known
0-Day Time: 🔍
11/27/2015 +149 days 🔍
09/25/2017 +668 days 🔍
09/25/2017 +0 days 🔍
09/26/2017 +1 days 🔍
04/03/2019 +554 days 🔍
01/14/2021 +652 days 🔍
Researcher: Federico Bento
CVE: CVE-2015-5327 (🔍)
SecurityFocus: 107890 - Linux Kernel CVE-2019-11190 Local Security Bypass Vulnerability
See also: 🔍
EntryCreated: 09/26/2017 09:01 AM
Updated: 01/14/2021 12:06 PM
Changes: (3) advisory_person_name exploit_price_0day vulnerability_cvss2_nvd_basescore
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