UPX Input File p_lx_elf.cpp PackLinuxElf64::canPack out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability was found in UPX. It has been classified as problematic. This impacts the function PackLinuxElf64::canPack of the file p_lx_elf.cpp of the component Input File Handler. This manipulation causes out-of-bounds. This vulnerability appears as CVE-2020-27788. The attack may be initiated remotely. There is no available exploit. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability has been found in UPX (unknown version) and classified as problematic. Affected by this vulnerability is the function PackLinuxElf64::canPack of the file p_lx_elf.cpp of the component Input File Handler. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect availability. The summary by CVE is:

An out-of-bounds read access vulnerability was discovered in UPX in PackLinuxElf64::canPack() function of p_lx_elf.cpp file. An attacker with a crafted input file could trigger this issue that could cause a crash leading to a denial of service.

The weakness was presented 08/19/2022 as 332. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2020-27788 since 10/27/2020. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

Applying the patch 1bb93d4fce9f1d764ba57bf5ac154af515b3fc83 is able to eliminate this problem. The bugfix is ready for download at github.com.

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Productinfo

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License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.9
VulDB Meta Temp Score: 4.8

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
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: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 1bb93d4fce9f1d764ba57bf5ac154af515b3fc83

Timelineinfo

10/27/2020 🔍
08/19/2022 +660 days 🔍
08/19/2022 +0 days 🔍
04/11/2025 +966 days 🔍

Sourcesinfo

Product: github.com

Advisory: 332
Status: Confirmed

CVE: CVE-2020-27788 (🔍)
GCVE (CVE): GCVE-0-2020-27788
GCVE (VulDB): GCVE-100-206743

Entryinfo

Created: 08/19/2022 08:13
Updated: 04/11/2025 15:35
Changes: 08/19/2022 08:13 (42), 09/18/2022 10:06 (11), 04/11/2025 15:35 (19)
Complete: 🔍
Cache ID: 216::103

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