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Vendor Haproxy First view 2019-03-21
Product Haproxy Last view 2022-03-02
Version 1.9.0 Type Application
Update dev8  
Edition *  
Language *  
Sofware Edition *  
Target Software *  
Target Hardware *  
Other *  
CPE Product cpe:2.3:a:haproxy:haproxy

Activity : Overall

Related : CVE

  Date Alert Description
7.5 2022-03-02 CVE-2022-0711

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.

7.5 2021-09-08 CVE-2021-40346

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.

7.5 2021-08-17 CVE-2021-39242

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.

5.3 2021-08-17 CVE-2021-39241

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.

7.5 2021-08-17 CVE-2021-39240

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.

8.8 2020-04-02 CVE-2020-11100

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.

9.8 2019-11-27 CVE-2019-19330

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.

7.5 2019-10-23 CVE-2019-18277

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).

7.5 2019-07-23 CVE-2019-14241

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.

5.9 2019-05-09 CVE-2019-11323

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.

7.5 2019-03-21 CVE-2018-20615

An out-of-bounds read issue was discovered in the HTTP/2 protocol decoder in HAProxy 1.8.x and 1.9.x through 1.9.0 which can result in a crash. The processing of the PRIORITY flag in a HEADERS frame requires 5 extra bytes, and while these bytes are skipped, the total frame length was not re-checked to make sure they were present in the frame.

CWE : Common Weakness Enumeration

14% (1) CWE-787 Out-of-bounds Write
14% (1) CWE-755 Improper Handling of Exceptional Conditions
14% (1) CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggli...
14% (1) CWE-327 Use of a Broken or Risky Cryptographic Algorithm
14% (1) CWE-190 Integer Overflow or Wraparound
14% (1) CWE-125 Out-of-bounds Read
14% (1) CWE-74 Failure to Sanitize Data into a Different Plane ('Injection')

Snort® IPS/IDS

Date Description
2019-10-24 HAProxy cookie denial of service attempt
RuleID : 51596 - Type : SERVER-OTHER - Revision : 1
2019-10-24 HAProxy cookie denial of service attempt
RuleID : 51595 - Type : SERVER-OTHER - Revision : 1
2019-10-24 HAProxy cookie denial of service attempt
RuleID : 51594 - Type : SERVER-OTHER - Revision : 1