Facebook Hermes up to 0.9.x Operators type confusion

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.4$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Facebook Hermes up to 0.9.x. Impacted is an unknown function of the component Operators Handler. Such manipulation leads to type confusion. This vulnerability is uniquely identified as CVE-2021-24045. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Facebook Hermes up to 0.9.x (Social Network Software). It has been rated as critical. Affected by this issue is an unknown part of the component Operators Handler. The manipulation with an unknown input leads to a type confusion vulnerability. Using CWE to declare the problem leads to CWE-843. The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type. Impacted is confidentiality, integrity, and availability.

The weakness was disclosed 12/14/2021. The advisory is shared for download at facebook.com. This vulnerability is handled as CVE-2021-24045 since 01/13/2021. There are neither technical details nor an exploit publicly available.

Upgrading to version 0.10.0 eliminates this vulnerability. Applying the patch 55e1b2343f4deb1a1b5726cfe1e23b2068217ff2 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.6
VulDB Meta Temp Score: 4.4

VulDB Base Score: 4.6
VulDB Temp Score: 4.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

Exploitinginfo

Class: Type confusion
CWE: CWE-843
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Hermes 0.10.0
Patch: 55e1b2343f4deb1a1b5726cfe1e23b2068217ff2

Timelineinfo

01/13/2021 🔍
12/14/2021 +335 days 🔍
12/14/2021 +0 days 🔍
12/16/2021 +2 days 🔍

Sourcesinfo

Product: github.com

Advisory: 55e1b2343f4deb1a1b5726cfe1e23b2068217ff2
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-24045 (🔍)
GCVE (CVE): GCVE-0-2021-24045
GCVE (VulDB): GCVE-100-188072

Entryinfo

Created: 12/14/2021 07:51
Updated: 12/16/2021 10:56
Changes: 12/14/2021 07:51 (42), 12/16/2021 10:56 (3)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Interested in the pricing of exploits?

See the underground prices here!