Vulnerability-Lookup

alsa-2023:5763

Vulnerability from osv_almalinux

Published

2023-10-17 00:00

Modified

2023-10-17 14:51

Summary

Important: curl security update

Details

The curl packages provide the libcurl library and the curl utility for downloading files from servers using various protocols, including HTTP, FTP, and LDAP.

Security Fix(es):

curl: a heap-based buffer overflow in the SOCKS5 proxy handshake (CVE-2023-38545)
curl: cookie injection with none file (CVE-2023-38546)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References

URL

Type

	https://access.redhat.com/errata/RHSA-2023:5763	ADVISORY
	https://access.redhat.com/security/cve/CVE-2023-38545	REPORT
	https://access.redhat.com/security/cve/CVE-2023-38546	REPORT
	https://bugzilla.redhat.com/2241933	REPORT
	https://bugzilla.redhat.com/2241938	REPORT
	https://errata.almalinux.org/9/ALSA-2023-5763.html	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "curl"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.76.1-23.el9_2.4"
            }
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        }
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    },
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      },
      "ranges": [
        {
          "events": [
            {
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            },
            {
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          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
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        "name": "libcurl-minimal"
      },
      "ranges": [
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        }
      ]
    }
  ],
  "details": "The curl packages provide the libcurl library and the curl utility for downloading files from servers using various protocols, including HTTP, FTP, and LDAP.\n\nSecurity Fix(es):\n\n* curl: a heap-based buffer overflow in the SOCKS5 proxy handshake (CVE-2023-38545)\n* curl: cookie injection with none file (CVE-2023-38546)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
  "id": "ALSA-2023:5763",
  "modified": "2023-10-17T14:51:19Z",
  "published": "2023-10-17T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2023:5763"
    },
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      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2023-38545"
    },
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      "url": "https://bugzilla.redhat.com/2241933"
    },
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      "url": "https://bugzilla.redhat.com/2241938"
    },
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    }
  ],
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    "CVE-2023-38545",
    "CVE-2023-38546"
  ],
  "summary": "Important: curl security update"
}

CVE-2023-38545 (GCVE-0-2023-38545)

Vulnerability from cvelistv5 – Published: 2023-10-18 03:52 – Updated: 2025-08-27 20:32

Summary

This flaw makes curl overflow a heap based buffer in the SOCKS5 proxy handshake. When curl is asked to pass along the host name to the SOCKS5 proxy to allow that to resolve the address instead of it getting done by curl itself, the maximum length that host name can be is 255 bytes. If the host name is detected to be longer, curl switches to local name resolving and instead passes on the resolved address only. Due to this bug, the local variable that means "let the host resolve the name" could get the wrong value during a slow SOCKS5 handshake, and contrary to the intention, copy the too long host name to the target buffer instead of copying just the resolved address there. The target buffer being a heap based buffer, and the host name coming from the URL that curl has been told to operate with.

Severity ?

8.8 (High)


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

CWE

CWE-787 - Out-of-bounds Write

Assigner

hackerone

References

URL

Tags

	https://curl.se/docs/CVE-2023-38545.html
	https://security.netapp.com/advisory/ntap-2023102…
	https://lists.fedoraproject.org/archives/list/pac…
	https://www.secpod.com/blog/high-severity-heap-bu…
	https://support.apple.com/kb/HT214036
	https://support.apple.com/kb/HT214063
	https://support.apple.com/kb/HT214057
	https://support.apple.com/kb/HT214058
	http://seclists.org/fulldisclosure/2024/Jan/34
	http://seclists.org/fulldisclosure/2024/Jan/37
	http://seclists.org/fulldisclosure/2024/Jan/38
	https://security.netapp.com/advisory/ntap-2024020…
	https://forum.vmssoftware.com/viewtopic.php?f=8&t=8868

Impacted products

	Vendor	Product	Version
	curl	curl	Affected: 8.4.0 , < 8.4.0 (semver) Unaffected: 7.69.0 , < 7.69.0 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2023-38546 (GCVE-0-2023-38546)

Vulnerability from cvelistv5 – Published: 2023-10-18 03:51 – Updated: 2025-11-04 19:17

Summary

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 "easy handles" that are the individual handles for single transfers. libcurl provides a function call that duplicates en easy handle called [curl_easy_duphandle](https://curl.se/libcurl/c/curl_easy_duphandle.html). 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.

Severity ?

No CVSS data available.

Assigner

hackerone

References

URL

Tags

	https://curl.se/docs/CVE-2023-38546.html
	https://lists.fedoraproject.org/archives/list/pac…
	https://support.apple.com/kb/HT214036
	https://support.apple.com/kb/HT214063
	https://support.apple.com/kb/HT214057
	https://support.apple.com/kb/HT214058
	http://seclists.org/fulldisclosure/2024/Jan/34
	http://seclists.org/fulldisclosure/2024/Jan/37
	http://seclists.org/fulldisclosure/2024/Jan/38
	https://forum.vmssoftware.com/viewtopic.php?f=8&t=8868

Impacted products

	Vendor	Product	Version
	curl	curl	Affected: 8.4.0 , < 8.4.0 (semver) Unaffected: 7.9.1 , < 7.9.1 (semver)

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

alsa-2023:5763

Vulnerability from osv_almalinux

CVE-2023-38545 (GCVE-0-2023-38545)

CVE-2023-38546 (GCVE-0-2023-38546)

Tags

Sightings

Nomenclature