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attackerkbAttackerKBAKB:C5CC4A41-B317-4A5B-9310-C01A4499BC3C
HistoryApr 02, 2020 - 12:00 a.m.

CVE-2020-11100

2020-04-0200:00:00
attackerkb.com
10

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

6.5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:S/C:P/I:P/A:P

JSON

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.

Recent assessments:

3dcyber at April 23, 2020 1:18pm UTC reported:

This vulnerability affects HAProxy and does not require prior authentication as indicated by the CVSS score. Hopefully there is an update to the CVSS.

This vulnerability allows RCE when HTTP2 is enabled on HAProxy. There is a PoC exploit created by the researcher who discovered the vulnerability.

Note that in some solutions HTTP2 on HAProxy may be enabled by default.

To defend against this vulnerability:

  • HAproxy patches can be applied.

  • As workaroud you can disable HTTP2.

Assessed Attacker Value: 4
Assessed Attacker Value: 4Assessed Attacker Value: 4

References

Related

prion 1
nessus 18
veracode 1
osv 3
alpinelinux 1
redhat 5
oraclelinux 2
fedora 2
openvas 7
ubuntu 1
suse 1
ubuntucve 1
debian 2
debiancve 1
freebsd 1
cve 1
checkpoint_advisories 1
ibm 2
gentoo 1
redhatcve 1
archlinux 1
photon 6
prion
prion
Remote code execution
2020-04-02 15:15:00
nessus
nessus
Photon OS 1.0: Haproxy PHSA-2020-1.0-0289
2020-04-28 00:00:00
Amazon Linux 2 : haproxy2 (ALASHAPROXY2-2023-006)
2023-09-27 00:00:00
Fedora 30 : haproxy (2020-16cd111544)
2020-04-14 00:00:00
veracode
veracode
Denial Of Service (DoS)
2020-04-03 00:40:38
osv
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haproxy - security update
2020-04-02 00:00:00
CVE-2020-11100
2020-04-02 15:15:17
BIT-haproxy-2020-11100
2024-03-06 10:55:05
alpinelinux
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CVE-2020-11100
2020-04-02 15:15:00
redhat
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(RHSA-2020:1290) Critical: rh-haproxy18-haproxy security update
2020-04-02 13:14:55
(RHSA-2020:1288) Critical: haproxy security update
2020-04-02 13:18:23
(RHSA-2020:1289) Critical: haproxy security update
2020-04-02 13:18:58
oraclelinux
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haproxy security update
2020-04-02 00:00:00
haproxy security, bug fix, and enhancement update
2020-05-05 00:00:00
fedora
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[SECURITY] Fedora 30 Update: haproxy-1.8.25-1.fc30
2020-04-11 21:51:58
[SECURITY] Fedora 31 Update: haproxy-2.0.14-1.fc31
2020-04-28 02:56:24
openvas
openvas
Fedora: Security Advisory for haproxy (FEDORA-2020-16cd111544)
2020-04-12 00:00:00
openSUSE: Security Advisory for haproxy (openSUSE-SU-2020:0444-1)
2020-04-05 00:00:00
Ubuntu: Security Advisory (USN-4321-1)
2020-04-08 00:00:00
ubuntu
ubuntu
HAProxy vulnerability
2020-04-07 00:00:00
suse
suse
Security update for haproxy (important)
2020-04-04 00:00:00
ubuntucve
ubuntucve
CVE-2020-11100
2020-04-02 00:00:00
debian
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[SECURITY] [DSA 4649-1] haproxy security update
2020-04-02 13:13:29
[SECURITY] [DSA 4649-1] haproxy security update
2020-04-02 13:13:29
debiancve
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CVE-2020-11100
2020-04-02 15:15:00
freebsd
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2020-04-02 00:00:00
cve
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2020-04-02 15:15:00
checkpoint_advisories
checkpoint_advisories
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2020-08-02 00:00:00
ibm
ibm
Security Bulletin: HAProxy vulnerability CVE-2020-11100 impacts IBM Aspera High-Speed Transfer Server and Aspera High-Speed Transfer Endpoint versions prior to V4.0
2020-12-10 23:21:25
Security Bulletin: Multiple Security Vulnerabilities were identified in IBM Security Verify Access.
2024-01-09 20:33:04
gentoo
gentoo
HAProxy: Arbitrary code execution
2020-12-24 00:00:00
redhatcve
redhatcve
CVE-2020-11100
2020-04-02 13:25:24
archlinux
archlinux
[ASA-202004-7] haproxy: arbitrary code execution
2020-04-08 00:00:00
photon
photon
Home Download Photon OS User Documentation FAQ Security Advisories Related Information Lightwave - PHSA-2020-2.0-0227
2020-04-08 00:00:00
Important Photon OS Security Update - PHSA-2020-0227
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Important Photon OS Security Update - PHSA-2020-0078
2020-04-08 00:00:00

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

6.5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:S/C:P/I:P/A:P

JSON
Related for AKB:C5CC4A41-B317-4A5B-9310-C01A4499BC3C
prion1nessus18veracode1osv3alpinelinux1redhat5oraclelinux2fedora2openvas7ubuntu1suse1ubuntucve1debian2debiancve1freebsd1cve1checkpoint_advisories1ibm2gentoo1redhatcve1archlinux1photon6