fmtlib up to 4.1.0 fmt::print memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.9$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in fmtlib up to 4.1.0. Affected by this issue is the function fmt::print. Executing a manipulation can lead to memory corruption. This vulnerability is tracked as CVE-2018-1000052. The attack can be launched remotely. No exploit exists. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in fmtlib up to 4.1.0. It has been declared as critical. This vulnerability affects the function fmt::print. The manipulation 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:

fmtlib version prior to version 4.1.0 (before commit 0555cea5fc0bf890afe0071a558e44625a34ba85) contains a Memory corruption (SIGSEGV), CWE-134 vulnerability in fmt::print() library function that can result in Denial of Service. This attack appear to be exploitable via Specifying an invalid format specifier in the fmt::print() function results in a SIGSEGV (memory corruption, invalid write). This vulnerability appears to have been fixed in after commit 8cf30aa2be256eba07bb1cefb998c52326e846e7.

The bug was discovered 02/02/2018. The weakness was disclosed 02/09/2018 (GitHub Repository). The advisory is shared for download at github.com. This vulnerability was named CVE-2018-1000052 since 02/05/2018. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 7 days. During that time the estimated underground price was around $0-$5k.

Applying the patch 0555cea5fc0bf890afe0071a558e44625a34ba85 is able to eliminate this problem.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 6.9

VulDB Base Score: 7.3
VulDB Temp Score: 6.4
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: 🔍

NVD Base Score: 🔍

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: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 0555cea5fc0bf890afe0071a558e44625a34ba85

Timelineinfo

02/02/2018 🔍
02/05/2018 +3 days 🔍
02/09/2018 +4 days 🔍
02/09/2018 +0 days 🔍
02/10/2018 +1 days 🔍
02/06/2023 +1822 days 🔍

Sourcesinfo

Advisory: 8cf30aa2be256eba07bb1cefb998c52326e846e7
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-1000052 (🔍)
GCVE (CVE): GCVE-0-2018-1000052
GCVE (VulDB): GCVE-100-113092

Entryinfo

Created: 02/10/2018 09:24
Updated: 02/06/2023 10:57
Changes: 02/10/2018 09:24 (57), 01/03/2020 15:53 (2), 02/06/2023 10:57 (5)
Complete: 🔍
Cache ID: 216::103

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