Vulnerabilities (CVE)

Filtered by vendor Haproxy Subscribe
Total 30 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2021-40346 3 Debian, Fedoraproject, Haproxy 3 Debian Linux, Fedora, Haproxy 2024-02-04 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-2021-39242 3 Debian, Fedoraproject, Haproxy 3 Debian Linux, Fedora, Haproxy 2024-02-04 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 2024-02-04 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-2021-39240 3 Debian, Fedoraproject, Haproxy 3 Debian Linux, Fedora, Haproxy 2024-02-04 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-2020-11100 3 Debian, Haproxy, Redhat 3 Debian Linux, Haproxy, Openshift Container Platform 2024-02-04 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.
CVE-2019-18277 1 Haproxy 1 Haproxy 2024-02-04 4.3 MEDIUM 7.5 HIGH
A flaw was found in HAProxy before 2.0.6. In legacy mode, messages featuring a transfer-encoding header missing the "chunked" value were not being correctly rejected. The impact was limited but if combined with the "http-reuse always" setting, it could be used to help construct an HTTP request smuggling attack against a vulnerable component employing a lenient parser that would ignore the content-length header as soon as it saw a transfer-encoding one (even if not entirely valid according to the specification).
CVE-2019-19330 3 Canonical, Debian, Haproxy 3 Ubuntu Linux, Debian Linux, Haproxy 2024-02-04 7.5 HIGH 9.8 CRITICAL
The HTTP/2 implementation in HAProxy before 2.0.10 mishandles headers, as demonstrated by carriage return (CR, ASCII 0xd), line feed (LF, ASCII 0xa), and the zero character (NUL, ASCII 0x0), aka Intermediary Encapsulation Attacks.
CVE-2019-14243 1 Haproxy 1 Proxyprotocol 2024-02-04 5.0 MEDIUM 7.5 HIGH
headerv2.go in mastercactapus proxyprotocol before 0.0.2, as used in the mastercactapus caddy-proxyprotocol plugin through 0.0.2 for Caddy, allows remote attackers to cause a denial of service (webserver panic and daemon crash) via a crafted HAProxy PROXY v2 request with truncated source/destination address data.
CVE-2019-11323 1 Haproxy 1 Haproxy 2024-02-04 4.3 MEDIUM 5.9 MEDIUM
HAProxy before 1.9.7 mishandles a reload with rotated keys, which triggers use of uninitialized, and very predictable, HMAC keys. This is related to an include/types/ssl_sock.h error.
CVE-2019-14241 1 Haproxy 1 Haproxy 2024-02-04 5.0 MEDIUM 7.5 HIGH
HAProxy through 2.0.2 allows attackers to cause a denial of service (ha_panic) via vectors related to htx_manage_client_side_cookies in proto_htx.c.