Lucene search

K
cve[email protected]CVE-2023-38546
HistoryOct 18, 2023 - 4:15 a.m.

CVE-2023-38546

2023-10-1804:15:11
web.nvd.nist.gov
518
29
libcurl
cve-2023-38546
cookies
security vulnerability
attack vector

3.7 Low

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

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

7 High

AI Score

Confidence

Low

0.001 Low

EPSS

Percentile

34.9%

This flaw allows an attacker to insert cookies at will into a running program
using libcurl, if the specific series of conditions are met.

libcurl performs transfers. In its API, an application creates β€œeasy handles”
that are the individual handles for single transfers.

libcurl provides a function call that duplicates en easy handle called
curl_easy_duphandle.

If a transfer has cookies enabled when the handle is duplicated, the
cookie-enable state is also cloned - but without cloning the actual
cookies. If the source handle did not read any cookies from a specific file on
disk, the cloned version of the handle would instead store the file name as
none (using the four ASCII letters, no quotes).

Subsequent use of the cloned handle that does not explicitly set a source to
load cookies from would then inadvertently load cookies from a file named
none - if such a file exists and is readable in the current directory of the
program using libcurl. And if using the correct file format of course.

Affected configurations

NVD
Node
haxxlibcurlRange7.9.1–8.4.0
CPENameOperatorVersion
haxx:libcurlhaxx libcurllt8.4.0

CNA Affected

[
  {
    "vendor": "curl",
    "product": "curl",
    "versions": [
      {
        "version": "8.4.0",
        "status": "affected",
        "lessThan": "8.4.0",
        "versionType": "semver"
      },
      {
        "version": "7.9.1",
        "status": "unaffected",
        "lessThan": "7.9.1",
        "versionType": "semver"
      }
    ]
  }
]

Social References

More

3.7 Low

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

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

7 High

AI Score

Confidence

Low

0.001 Low

EPSS

Percentile

34.9%