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[email protected]NVD:CVE-2021-28099

HistoryMar 23, 2021 - 9:15 p.m.

CVE-2021-28099

2021-03-2321:15:13

CWE-330

[email protected]

web.nvd.nist.gov

netflix

oss

hollow

insecure directory

deterministic file name

security vulnerability

CVSS2

3.6

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:L/AC:L/Au:N/C:P/I:P/A:N

CVSS3

4.4

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

EPSS

Percentile

12.6%

JSON

In Netflix OSS Hollow, since the Files.exists(parent) is run before creating the directories, an attacker can pre-create these directories with wide permissions. Additionally, since an insecure source of randomness is used, the file names to be created can be deterministically calculated.

Affected configurations

Nvd

Node

netflixhollowMatch-

VendorProductVersionCPE
netflixhollow-cpe:2.3:a:netflix:hollow:-:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
netflix	hollow	-	cpe:2.3:a:netflix:hollow:-:::::::*

References

github.com/Netflix/security-bulletins/blob/master/advisories/nflx-2021-001.md

CVSS2

3.6

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:L/AC:L/Au:N/C:P/I:P/A:N

CVSS3

4.4

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

EPSS

Percentile

12.6%

JSON

Related for NVD:CVE-2021-28099

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