CVE-2023-38545

A heap-based buffer overflow flaw was found in the SOCKS5 proxy handshake in the Curl package. If Curl is unable to resolve the address itself, it passes the hostname to the SOCKS5 proxy. However, the maximum length of the hostname that can be passed is 255 bytes. If the hostname is longer, then...

[slackware-security] curl

New curl packages are available for Slackware 14.0, 14.1, 14.2, 15.0, and -current to fix security issues. Here are the details from the Slackware 15.0 ChangeLog: patches/packages/curl-8.4.0-i586-1slack15.0.txz: Upgraded. This update fixes security issues: Cookie injection with none file. SOCKS5...

CVE-2023-38545

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 na...

cURL SOCKS5 Heap Overflow Vulnerability

cURL is a network data transfer project. Usually when we say cURL, we mean the cURL command line tool. cURL's underlying use is the libcurl library. A heap overflow vulnerability exists in cURL SOCKS5, which can be exploited by an attacker to construct a malicious hostname and cause code executio...

Important: curl

Issue Overview: An issue was found in curl that can cause a buffer overflow in its SOCKS5 proxy communications code. When curl is using a SOCKS5 proxy and it needs to resolve a hostname to an IP address, its default behavior is to pass the hostname to the proxy and allow it to perform the...

Debian DSA-5523-1 : curl - security update

The remote Debian 11 / 12 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-5523 advisory. - CVE-2023-38545 is a heap-based buffer overflow vulnerability in the SOCKS5 proxy handshake in libcurl and curl. When curl is given a hostname to pass along...

Ubuntu 20.04 LTS / 22.04 LTS / 23.04 : curl vulnerabilities (USN-6429-1)

The remote Ubuntu 20.04 LTS / 22.04 LTS / 23.04 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6429-1 advisory. Jay Satiro discovered that curl incorrectly handled hostnames when using a SOCKS5 proxy. In environments where curl is configured to...

Amazon Linux 2023 : curl, curl-minimal, libcurl (ALAS2023-2023-377)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2023-377 advisory. An issue was found in curl that can cause a buffer overflow in its SOCKS5 proxy communications code. When curl is using a SOCKS5 proxy and it needs to resolve a hostname to an IP address, its...

cURL SOCKS5 Code Execution

The vulnerability of the SOCKS5 protocol implementation in the CURL command-line utility is related to the issue of writing operations out of the buffer during the processing of hostname length. Exploiting this vulnerability allows a remote attacker to cause service failures or execute arbitrary...

Slackware Linux 14.0 / 14.1 / 14.2 / 15.0 / current curl Multiple Vulnerabilities (SSA:2023-284-01)

The version of curl installed on the remote host is prior to 8.4.0. It is, therefore, affected by multiple vulnerabilities as referenced in the SSA:2023-284-01 advisory. - CVE-2023-38545 is a heap-based buffer overflow vulnerability in the SOCKS5 proxy handshake in libcurl and curl. When curl is...

Vulnerability fixed in libcurl

There is a vulnerability in the SOCKS5 proxy handshake of libcurl. A malicious party could potentially exploit the vulnerability to cause a crash in the application using libcurl. To perform this attack successfully, several conditions must be met such as using a SOCKS5 proxy, the use of a long...

Curl 7.69 < 8.4.0 Heap Buffer Overflow

The version of curl installed on the remote host is affected by a heap based buffer overflow in the SOCKS5 proxy handshake. When curl is asked to pass along the hostname to the SOCKS5 proxy to allow that to resolve the address instead of it getting done by curl itself, the maximum length that...

FreeBSD : curl -- SOCKS5 heap buffer overflow (d6c19e8c-6806-11ee-9464-b42e991fc52e)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the d6c19e8c-6806-11ee-9464-b42e991fc52e advisory. - CVE-2023-38545 is a heap-based buffer overflow vulnerability in the SOCKS5 proxy handshake in libcurl...

libcurl 7.69 < 8.4.0 Heap Buffer Overflow

The version of libcurl installed on the remote host is affected by a heap based buffer overflow in the SOCKS5 proxy handshake. When curl is asked to pass along the hostname to the SOCKS5 proxy to allow that to resolve the address instead of it getting done by curl itself, the maximum length that...

Heap-based Buffer Overflow

Overview Affected versions of this package are vulnerable to Heap-based Buffer Overflow in the SOCKS5 proxy handshake process when the hostname is longer than the target buffer and larger than 255 bytes. The local variable socks5resolvelocal could get the wrong value during a slow SOCKS5 handshak...

Heap-based Buffer Overflow

Overview curl-cffi is a python binding for curl-impersonate via cffi. Affected versions of this package are vulnerable to Heap-based Buffer Overflow in the SOCKS5 proxy handshake process when the hostname is longer than the target buffer and larger than 255 bytes. The local variable...

curl: CVE-2023-38545: socks5 heap buffer overflow

Vulnerability description not provided...

curl -- SOCKS5 heap buffer overflow

The curl team reports: This flaw makes curl overflow a heap based buffer in the SOCKS5 proxy handshake. When curl is asked to pass along the hostname to the SOCKS5 proxy to allow that to resolve the address instead of it getting done by curl itself, the maximum length that hostname can be is 255...

Authentication Bypass

Sing is vulnerable to an authentication bypass vulnerability. The vulnerability is due to SOCKS5 inbound user authentication which allows an attacker to bypass authentication by using specially crafted packets...

GHSA-R5HM-MP3J-285G sing-box vulnerable to improper authentication in the SOCKS inbound

Impact This vulnerability allows specially crafted requests to bypass authentication, affecting all SOCKS inbounds with user authentication. Patches Update to sing-box 1.4.5 or 1.5.0-rc.5 and later versions. Workarounds Don't expose the SOCKS5 inbound to insecure environments...