tlslite Library up to 0.4.8 on Python memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability was found in tlslite Library up to 0.4.8 on Python (Software Library). It has been declared as problematic. This vulnerability affects an unknown code block. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect availability. CVE summarizes:

The tlslite library before 0.4.9 for Python allows remote attackers to trigger a denial of service (runtime exception and process crash).

The bug was discovered 08/17/2015. The weakness was published 06/13/2017 (Website). The advisory is available at This vulnerability was named CVE-2015-3220 since 04/10/2015. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available.

The vulnerability was handled as a non-public zero-day exploit for at least 666 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 0.4.9 eliminates this vulnerability.






CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍


Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: tlslite Library 0.4.9


04/10/2015 🔍
08/17/2015 +129 days 🔍
06/13/2017 +666 days 🔍
06/13/2017 +0 days 🔍
06/14/2017 +1 days 🔍
12/08/2022 +2003 days 🔍


Advisory: aca8d4f898b436ff6754e1a9ab96cae976c8a853
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-3220 (🔍)


Created: 06/14/2017 05:35 AM
Updated: 12/08/2022 01:25 PM
Changes: 06/14/2017 05:35 AM (59), 10/16/2019 04:41 PM (1), 12/08/2022 01:25 PM (5)
Complete: 🔍


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