6.5
MEDIUM
CVE-2019-20016
Sophoslib MysofaRecursive Deserialization Consumption
Description

libmysofa before 2019-11-24 does not properly restrict recursive function calls, as demonstrated by reports of stack consumption in readOHDRHeaderMessageDatatype in dataobject.c and directblockRead in fractalhead.c. NOTE: a download of v0.9 after 2019-12-06 should fully remediate this issue.

INFO

Published Date :

Dec. 27, 2019, 2:15 a.m.

Last Modified :

Jan. 8, 2020, 9:22 p.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2019-20016 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Symonics libmysofa
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2019-20016.

URL Resource
https://github.com/hoene/libmysofa/commit/2e6fac6ab6156dae8e8c6f417741388084b70d6f Patch Third Party Advisory
https://github.com/hoene/libmysofa/issues/83 Exploit Third Party Advisory
https://github.com/hoene/libmysofa/issues/84 Exploit Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2019-20016 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2019-20016 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Reanalysis by [email protected]

    Jan. 08, 2020

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:libmysofa_project:libmysofa:*:*:*:*:*:*:*:* versions up to (excluding) 0.9 OR *cpe:2.3:a:symonics:libmysofa:*:*:*:*:*:*:*:* versions up to (excluding) 0.9
  • Initial Analysis by [email protected]

    Jan. 08, 2020

    Action Type Old Value New Value
    Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:N/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
    Changed Reference Type https://github.com/hoene/libmysofa/commit/2e6fac6ab6156dae8e8c6f417741388084b70d6f No Types Assigned https://github.com/hoene/libmysofa/commit/2e6fac6ab6156dae8e8c6f417741388084b70d6f Patch, Third Party Advisory
    Changed Reference Type https://github.com/hoene/libmysofa/issues/83 No Types Assigned https://github.com/hoene/libmysofa/issues/83 Exploit, Third Party Advisory
    Changed Reference Type https://github.com/hoene/libmysofa/issues/84 No Types Assigned https://github.com/hoene/libmysofa/issues/84 Exploit, Third Party Advisory
    Added CWE NIST CWE-787
    Added CPE Configuration OR *cpe:2.3:a:libmysofa_project:libmysofa:*:*:*:*:*:*:*:* versions up to (excluding) 0.9
  • CVE Modified by [email protected]

    Dec. 27, 2019

    Action Type Old Value New Value
    Changed Description libmysofa 0.9 does not properly restrict recursive function calls, as demonstrated by reports of stack consumption in readOHDRHeaderMessageDatatype in dataobject.c and directblockRead in fractalhead.c. libmysofa before 2019-11-24 does not properly restrict recursive function calls, as demonstrated by reports of stack consumption in readOHDRHeaderMessageDatatype in dataobject.c and directblockRead in fractalhead.c. NOTE: a download of v0.9 after 2019-12-06 should fully remediate this issue.
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2019-20016 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2019-20016 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.31 }} 0.09%

score

0.66493

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability