UPX p_lx_elf.cpp invert_pt_dynamic bucket memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in UPX. Affected by this vulnerability is the function PackLinuxElf32::invert_pt_dynamic of the file p_lx_elf.cpp. Executing a manipulation of the argument bucket can lead to memory corruption. This vulnerability appears as CVE-2021-43313. There is no available exploit.

Detailsinfo

A vulnerability was found in UPX (the affected version unknown). It has been declared as critical. This vulnerability affects the function PackLinuxElf32::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. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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 PackLinuxElf32::invert_pt_dynamic at p_lx_elf.cpp:1688.

The weakness was presented 03/25/2023 as 378. The advisory is shared for download at github.com. This vulnerability was named CVE-2021-43313 since 11/03/2021. There are known technical details, but no exploit is available.

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

Once again VulDB remains the best source for vulnerability data.

Productinfo

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License

Website

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

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔍

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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: 378
Status: Confirmed

CVE: CVE-2021-43313 (🔍)
GCVE (CVE): GCVE-0-2021-43313
GCVE (VulDB): GCVE-100-223828

Entryinfo

Created: 03/25/2023 07:44
Updated: 04/14/2023 10:45
Changes: 03/25/2023 07:44 (39), 04/14/2023 10:45 (11)
Complete: 🔍
Cache ID: 216::103

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