Vulnerabilities (CVE)

Filtered by vendor Haproxy Subscribe
Total 31 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2016-5360 2 Canonical, Haproxy 2 Ubuntu Linux, Haproxy 2024-11-21 5.0 MEDIUM 7.5 HIGH
HAproxy 1.6.x before 1.6.6, when a deny comes from a reqdeny rule, allows remote attackers to cause a denial of service (uninitialized memory access and crash) or possibly have unspecified other impact via unknown vectors.
CVE-2016-2102 1 Haproxy 1 Haproxy 2024-11-21 5.0 MEDIUM 5.3 MEDIUM
HAProxy statistics in openstack-tripleo-image-elements are non-authenticated over the network.
CVE-2015-3281 6 Canonical, Debian, Haproxy and 3 more 12 Ubuntu Linux, Debian Linux, Haproxy and 9 more 2024-11-21 5.0 MEDIUM N/A
The buffer_slow_realign function in HAProxy 1.5.x before 1.5.14 and 1.6-dev does not properly realign a buffer that is used for pending outgoing data, which allows remote attackers to obtain sensitive information (uninitialized memory contents of previous requests) via a crafted request.
CVE-2014-6269 1 Haproxy 1 Haproxy 2024-11-21 5.0 MEDIUM N/A
Multiple integer overflows in the http_request_forward_body function in proto_http.c in HAProxy 1.5-dev23 before 1.5.4 allow remote attackers to cause a denial of service (crash) via a large stream of data, which triggers a buffer overflow and an out-of-bounds read.
CVE-2013-2175 4 Canonical, Debian, Haproxy and 1 more 4 Ubuntu Linux, Debian Linux, Haproxy and 1 more 2024-11-21 5.0 MEDIUM N/A
HAProxy 1.4 before 1.4.24 and 1.5 before 1.5-dev19, when configured to use hdr_ip or other "hdr_*" functions with a negative occurrence count, allows remote attackers to cause a denial of service (negative array index usage and crash) via an HTTP header with a certain number of values, related to the MAX_HDR_HISTORY variable.
CVE-2013-1912 1 Haproxy 1 Haproxy 2024-11-21 5.1 MEDIUM N/A
Buffer overflow in HAProxy 1.4 through 1.4.22 and 1.5-dev through 1.5-dev17, when HTTP keep-alive is enabled, using HTTP keywords in TCP inspection rules, and running with rewrite rules that appends to requests, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via crafted pipelined HTTP requests that prevent request realignment from occurring.
CVE-2012-2942 1 Haproxy 1 Haproxy 2024-11-21 5.1 MEDIUM N/A
Buffer overflow in the trash buffer in the header capture functionality in HAProxy before 1.4.21, when global.tune.bufsize is set to a value greater than the default and header rewriting is enabled, allows remote attackers to cause a denial of service and possibly execute arbitrary code via unspecified vectors.
CVE-2023-45539 1 Haproxy 1 Haproxy 2024-10-15 N/A 8.2 HIGH
HAProxy before 2.8.2 accepts # as part of the URI component, which might allow remote attackers to obtain sensitive information or have unspecified other impact upon misinterpretation of a path_end rule, such as routing index.html#.png to a static server.
CVE-2024-45506 1 Haproxy 1 Haproxy 2024-10-14 N/A 7.5 HIGH
HAProxy 2.9.x before 2.9.10, 3.0.x before 3.0.4, and 3.1.x through 3.1-dev6 allows a remote denial of service for HTTP/2 zero-copy forwarding (h2_send loop) under a certain set of conditions, as exploited in the wild in 2024.
CVE-2023-40225 1 Haproxy 1 Haproxy 2024-02-28 N/A 7.2 HIGH
HAProxy through 2.0.32, 2.1.x and 2.2.x through 2.2.30, 2.3.x and 2.4.x through 2.4.23, 2.5.x and 2.6.x before 2.6.15, 2.7.x before 2.7.10, and 2.8.x before 2.8.2 forwards empty Content-Length headers, violating RFC 9110 section 8.6. In uncommon cases, an HTTP/1 server behind HAProxy may interpret the payload as an extra request.
CVE-2023-0056 3 Fedoraproject, Haproxy, Redhat 10 Extra Packages For Enterprise Linux, Fedora, Haproxy and 7 more 2024-02-28 N/A 6.5 MEDIUM
An uncontrolled resource consumption vulnerability was discovered in HAProxy which could crash the service. This issue could allow an authenticated remote attacker to run a specially crafted malicious server in an OpenShift cluster. The biggest impact is to availability.
CVE-2023-25950 1 Haproxy 1 Haproxy 2024-02-28 N/A 7.3 HIGH
HTTP request/response smuggling vulnerability in HAProxy version 2.7.0, and 2.6.1 to 2.6.7 allows a remote attacker to alter a legitimate user's request. As a result, the attacker may obtain sensitive information or cause a denial-of-service (DoS) condition.
CVE-2023-0836 1 Haproxy 1 Haproxy 2024-02-28 N/A 7.5 HIGH
An information leak vulnerability was discovered in HAProxy 2.1, 2.2 before 2.2.27, 2.3, 2.4 before 2.4.21, 2.5 before 2.5.11, 2.6 before 2.6.8, 2.7 before 2.7.1. There are 5 bytes left uninitialized in the connection buffer when encoding the FCGI_BEGIN_REQUEST record. Sensitive data may be disclosed to configured FastCGI backends in an unexpected way.
CVE-2023-25725 2 Debian, Haproxy 2 Debian Linux, Haproxy 2024-02-28 N/A 9.1 CRITICAL
HAProxy before 2.7.3 may allow a bypass of access control because HTTP/1 headers are inadvertently lost in some situations, aka "request smuggling." The HTTP header parsers in HAProxy may accept empty header field names, which could be used to truncate the list of HTTP headers and thus make some headers disappear after being parsed and processed for HTTP/1.0 and HTTP/1.1. For HTTP/2 and HTTP/3, the impact is limited because the headers disappear before being parsed and processed, as if they had not been sent by the client. The fixed versions are 2.7.3, 2.6.9, 2.5.12, 2.4.22, 2.2.29, and 2.0.31.
CVE-2022-0711 3 Debian, Haproxy, Redhat 5 Debian Linux, Haproxy, Enterprise Linux and 2 more 2024-02-28 5.0 MEDIUM 7.5 HIGH
A flaw was found in the way HAProxy processed HTTP responses containing the "Set-Cookie2" header. This flaw could allow an attacker to send crafted HTTP response packets which lead to an infinite loop, eventually resulting in a denial of service condition. The highest threat from this vulnerability is availability.
CVE-2021-40346 3 Debian, Fedoraproject, Haproxy 3 Debian Linux, Fedora, Haproxy 2024-02-28 5.0 MEDIUM 7.5 HIGH
An integer overflow exists in HAProxy 2.0 through 2.5 in htx_add_header that can be exploited to perform an HTTP request smuggling attack, allowing an attacker to bypass all configured http-request HAProxy ACLs and possibly other ACLs.
CVE-2021-39240 3 Debian, Fedoraproject, Haproxy 3 Debian Linux, Fedora, Haproxy 2024-02-28 5.0 MEDIUM 7.5 HIGH
An issue was discovered in HAProxy 2.2 before 2.2.16, 2.3 before 2.3.13, and 2.4 before 2.4.3. It does not ensure that the scheme and path portions of a URI have the expected characters. For example, the authority field (as observed on a target HTTP/2 server) might differ from what the routing rules were intended to achieve.
CVE-2021-39242 3 Debian, Fedoraproject, Haproxy 3 Debian Linux, Fedora, Haproxy 2024-02-28 5.0 MEDIUM 7.5 HIGH
An issue was discovered in HAProxy 2.2 before 2.2.16, 2.3 before 2.3.13, and 2.4 before 2.4.3. It can lead to a situation with an attacker-controlled HTTP Host header, because a mismatch between Host and authority is mishandled.
CVE-2021-39241 3 Debian, Fedoraproject, Haproxy 3 Debian Linux, Fedora, Haproxy 2024-02-28 5.0 MEDIUM 5.3 MEDIUM
An issue was discovered in HAProxy 2.0 before 2.0.24, 2.2 before 2.2.16, 2.3 before 2.3.13, and 2.4 before 2.4.3. An HTTP method name may contain a space followed by the name of a protected resource. It is possible that a server would interpret this as a request for that protected resource, such as in the "GET /admin? HTTP/1.1 /static/images HTTP/1.1" example.
CVE-2020-11100 6 Canonical, Debian, Fedoraproject and 3 more 6 Ubuntu Linux, Debian Linux, Fedora and 3 more 2024-02-28 6.5 MEDIUM 8.8 HIGH
In hpack_dht_insert in hpack-tbl.c in the HPACK decoder in HAProxy 1.8 through 2.x before 2.1.4, a remote attacker can write arbitrary bytes around a certain location on the heap via a crafted HTTP/2 request, possibly causing remote code execution.