7.8
HIGH
CVE-2021-20294
"Binutils Readelf Stack Buffer Overflow"
Description

A flaw was found in binutils readelf 2.35 program. An attacker who is able to convince a victim using readelf to read a crafted file could trigger a stack buffer overflow, out-of-bounds write of arbitrary data supplied by the attacker. The highest impact of this flaw is to confidentiality, integrity, and availability.

INFO

Published Date :

April 29, 2021, 4:15 p.m.

Last Modified :

Nov. 7, 2023, 3:29 a.m.

Source :

[email protected]

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

1.8
Public PoC/Exploit Available at Github

CVE-2021-20294 has a 6 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-20294 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 Gnu binutils
: Total Affected Vendor : 1 | Products : 1
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-2021-20294.

URL Resource
https://bugzilla.redhat.com/show_bug.cgi?id=1943533 Issue Tracking Third Party Advisory
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
https://security.gentoo.org/glsa/202208-30 Third Party Advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=26929 Exploit Issue Tracking Patch Third Party Advisory
https://sourceware.org/git/?p=binutils-gdb.git%3Ba=patch%3Bh=372dd157272e0674d13372655cc60eaca9c06926

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).

Profile Photo
by-roj/24_Vulnerability-Analysis-and-PoC-Reimplementation

None

Updated: 9 hours, 31 minutes ago
0 stars 0 fork 0 watcher
Born at : Nov. 22, 2024, 5:52 a.m. This repo has been linked 6 different CVEs too.
Profile Photo
fokypoky/places-list

None

asp-net-core csharp docker dockerfile javascript react webapi docker-compose

C# Dockerfile HTML JavaScript CSS

Updated: 7 months, 2 weeks ago
0 stars 0 fork 0 watcher
Born at : Feb. 22, 2024, 6:42 p.m. This repo has been linked 383 different CVEs too.
Profile Photo
whoforget/CVE-POC

None

Updated: 1 year, 7 months ago
0 stars 2 fork 2 watcher
Born at : April 8, 2023, 6:19 a.m. This repo has been linked 923 different CVEs too.
Profile Photo
tin-z/tin-z

None

Updated: 4 months, 2 weeks ago
2 stars 0 fork 0 watcher
Born at : March 16, 2023, 3:08 p.m. This repo has been linked 5 different CVEs too.
Profile Photo
k0mi-tg/CVE-POC

None

Updated: 9 months, 1 week ago
20 stars 3 fork 3 watcher
Born at : Feb. 14, 2023, 6:10 p.m. This repo has been linked 921 different CVEs too.
Profile Photo
tin-z/CVE-2021-20294-POC

Simple CVE-2021-20294 poc

C

Updated: 3 months, 2 weeks ago
11 stars 2 fork 2 watcher
Born at : Jan. 21, 2023, 4:15 p.m. This repo has been linked 1 different CVEs too.

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

The following list is the news that have been mention CVE-2021-20294 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-20294 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
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference Red Hat, Inc. https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E [No types assigned]
    Added Reference Red Hat, Inc. https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E [No types assigned]
    Added Reference Red Hat, Inc. https://sourceware.org/git/?p=binutils-gdb.git%3Ba=patch%3Bh=372dd157272e0674d13372655cc60eaca9c06926 [No types assigned]
    Removed Reference Red Hat, Inc. https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E
    Removed Reference Red Hat, Inc. https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E
    Removed Reference Red Hat, Inc. https://sourceware.org/git/?p=binutils-gdb.git;a=patch;h=372dd157272e0674d13372655cc60eaca9c06926
  • Modified Analysis by [email protected]

    Nov. 16, 2022

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Oct. 07, 2022

    Action Type Old Value New Value
    Removed CWE Red Hat, Inc. CWE-119
    Added CWE Red Hat, Inc. CWE-787
    Removed CWE Reason CWE-119 / More specific CWE option available
  • Modified Analysis by [email protected]

    Sep. 28, 2022

    Action Type Old Value New Value
    Changed Reference Type https://security.gentoo.org/glsa/202208-30 No Types Assigned https://security.gentoo.org/glsa/202208-30 Third Party Advisory
  • CVE Modified by [email protected]

    Aug. 15, 2022

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/202208-30 [No Types Assigned]
  • Reanalysis by [email protected]

    Aug. 05, 2022

    Action Type Old Value New Value
  • Modified Analysis by [email protected]

    Mar. 23, 2022

    Action Type Old Value New Value
    Changed Reference Type https://sourceware.org/git/?p=binutils-gdb.git;a=patch;h=372dd157272e0674d13372655cc60eaca9c06926 No Types Assigned https://sourceware.org/git/?p=binutils-gdb.git;a=patch;h=372dd157272e0674d13372655cc60eaca9c06926 Patch, Third Party Advisory
    Added CWE NIST CWE-787
    Changed CPE Configuration OR *cpe:2.3:a:gnu:binutils:*:*:*:*:*:*:*:* versions up to (excluding) 2.35.2 OR *cpe:2.3:a:gnu:binutils:*:*:*:*:*:*:*:* versions from (including) 2.35 up to (excluding) 2.35.2
  • CVE Modified by [email protected]

    Jan. 12, 2022

    Action Type Old Value New Value
    Added Reference https://sourceware.org/git/?p=binutils-gdb.git;a=patch;h=372dd157272e0674d13372655cc60eaca9c06926 [No Types Assigned]
  • Modified Analysis by [email protected]

    Sep. 13, 2021

    Action Type Old Value New Value
    Changed Reference Type https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E Mailing List, Third Party Advisory
    Changed Reference Type https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E No Types Assigned https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E Mailing List, Third Party Advisory
  • CVE Modified by [email protected]

    Jun. 29, 2021

    Action Type Old Value New Value
    Added Reference https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E [No Types Assigned]
  • CVE Modified by [email protected]

    Jun. 28, 2021

    Action Type Old Value New Value
    Added Reference https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E [No Types Assigned]
  • Initial Analysis by [email protected]

    May. 09, 2021

    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:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1943533 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1943533 Issue Tracking, Third Party Advisory
    Changed Reference Type https://sourceware.org/bugzilla/show_bug.cgi?id=26929 No Types Assigned https://sourceware.org/bugzilla/show_bug.cgi?id=26929 Exploit, Issue Tracking, Patch, Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:a:gnu:binutils:*:*:*:*:*:*:*:* versions up to (excluding) 2.35.2
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-2021-20294 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-2021-20294 weaknesses.

Exploit Prediction

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

0.29 }} 0.05%

score

0.69723

percentile

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