UPX p_lx_elf.cpp invert_pt_dynamic bucket memory corruption

HistoryDiffrelatejsonxmlCTI

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6.5	$0-$5k	0.00

Summaryinfo

A vulnerability identified as critical has been detected in UPX. Affected is the function PackLinuxElf64::invert_pt_dynamic of the file p_lx_elf.cpp. Performing a manipulation of the argument bucket results in memory corruption. This vulnerability is reported as CVE-2021-43312. No exploit exists.

Detailsinfo

A vulnerability was found in UPX (affected version not known). It has been classified as critical. This affects the function PackLinuxElf64::invert_pt_dynamic of the file p_lx_elf.cpp. The manipulation of the argument bucket with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A heap-based buffer overflow was discovered in upx, during the variable 'bucket' points to an inaccessible address. The issue is being triggered in the function PackLinuxElf64::invert_pt_dynamic at p_lx_elf.cpp:5239.

The weakness was disclosed 03/25/2023 as 379. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2021-43312 since 11/03/2021. Technical details of the vulnerability are known, but there is no available exploit.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

License

free

Website

Product: https://github.com/upx/upx/

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/03/2021 🔍
03/25/2023 +507 days 🔍
03/25/2023 +0 days 🔍
04/14/2023 +20 days 🔍

Sourcesinfo

Product: github.com

Advisory: 379
Status: Confirmed

CVE: CVE-2021-43312 (🔍)
GCVE (CVE): GCVE-0-2021-43312
GCVE (VulDB): GCVE-100-223827

Entryinfo

Created: 03/25/2023 07:43
Updated: 04/14/2023 10:39
Changes: 03/25/2023 07:43 (39), 04/14/2023 10:39 (11)
Complete: 🔍
Cache ID: 216::103