LibVNCServer up to 0.9.12 libvncclient/sockets.c Filename buffer overflow
|CVSS Meta Temp Score|
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|CTI Interest Score|
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A vulnerability was found in LibVNCServer up to 0.9.12. It has been declared as critical. This vulnerability affects an unknown code of the file libvncclient/sockets.c. The manipulation as part of a Filename leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-120. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:
libvncclient/sockets.c in LibVNCServer before 0.9.13 has a buffer overflow via a long socket filename.
The weakness was disclosed 06/17/2020. This vulnerability was named CVE-2019-20839 since 06/17/2020. 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.
Upgrading to version 0.9.13 eliminates this vulnerability.
CVSSv3VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.1
VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍
NVD Base Score: 7.5
NVD Vector: 🔒
VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
NVD Base Score: 🔒
ExploitingClass: Memory corruption
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒
Threat IntelligenceThreat: 🔍
0-Day Time: 🔒
Upgrade: LibVNCServer 0.9.13
Timeline06/17/2020 Advisory disclosed
06/17/2020 +0 days CVE assigned
06/18/2020 +1 days VulDB entry created
06/18/2020 +0 days VulDB last update
SourcesStatus: Not defined
CVE: CVE-2019-20839 (🔒)
See also: 🔒
EntryCreated: 06/18/2020 06:55 AM
Changes: (17) vulnerability_cwe vulnerability_cvss2_nvd_av vulnerability_cvss2_nvd_ac vulnerability_cvss2_nvd_au vulnerability_cvss2_nvd_ci vulnerability_cvss2_nvd_ii vulnerability_cvss2_nvd_ai vulnerability_cvss3_nvd_av vulnerability_cvss3_nvd_ac vulnerability_cvss3_nvd_pr vulnerability_cvss3_nvd_ui vulnerability_cvss3_nvd_s vulnerability_cvss3_nvd_c vulnerability_cvss3_nvd_i vulnerability_cvss3_nvd_a source_cve_assigned source_cve_nvd_summary
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