VDB-214054 · Submit #52581 · CVE-2022-4087

iPXE TLS src/net/tls.c tls_new_ciphertext pad_len information exposure

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.
3.1	$0-$5k	0.32

Summaryinfo

A vulnerability categorized as problematic has been discovered in iPXE. Impacted is the function tls_new_ciphertext of the file src/net/tls.c of the component TLS. Executing a manipulation of the argument pad_len can lead to information exposure. The identification of this vulnerability is CVE-2022-4087. There is no exploit available. It is best practice to apply a patch to resolve this issue.

Detailsinfo

A vulnerability was found in iPXE (affected version unknown). It has been declared as problematic. This vulnerability affects the function tls_new_ciphertext of the file src/net/tls.c of the component TLS. The manipulation of the argument pad_len with an unknown input leads to a information exposure vulnerability. The CWE definition for the vulnerability is CWE-203. The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not. As an impact it is known to affect confidentiality.

The weakness was shared 11/21/2022 as 186306d6199096b7a7c4b4574d4be8cdb8426729. The advisory is available at github.com. This vulnerability was named CVE-2022-4087. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

Applying the patch 186306d6199096b7a7c4b4574d4be8cdb8426729 is able to eliminate this problem. The bugfix is ready for download at github.com.

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Productinfo

Name

iPXE

License

open-source

Website

Product: https://github.com/ipxe/ipxe/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.2
VulDB Meta Temp Score: 3.1

VulDB Base Score: 2.6
VulDB Temp Score: 2.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.3
NVD Vector: 🔍

CNA Base Score: 2.6
CNA Vector (VulDB): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

Class: Information exposure
CWE: CWE-203 / CWE-200 / CWE-284
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 186306d6199096b7a7c4b4574d4be8cdb8426729

Timelineinfo

11/20/2022 🔍
11/21/2022 +1 days 🔍
11/21/2022 +0 days 🔍
12/21/2022 +30 days 🔍

Sourcesinfo

Product: github.com

Advisory: 186306d6199096b7a7c4b4574d4be8cdb8426729
Status: Confirmed

CVE: CVE-2022-4087 (🔍)
GCVE (CVE): GCVE-0-2022-4087
GCVE (VulDB): GCVE-100-214054

Entryinfo

Created: 11/21/2022 07:37
Updated: 12/21/2022 08:58
Changes: 11/21/2022 07:37 (22), 11/21/2022 07:38 (20), 12/21/2022 08:55 (2), 12/21/2022 08:58 (21)
Complete: 🔍
Submitter: rezaduty
Cache ID: 216::103

Submitinfo

Accepted

Submit #52581: Http Header Injection in [Login IP & Country Restriction] wordpress plugin (by rezaduty)