High severity · published Apr 2, 2020
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…
8.8
CVSS
61.6%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)61.6% · higher than 99% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
10.0 · source: NVD
FE
Fedora · Fedoraproject
30; 31 · source: NVD
HA
Haproxy · Haproxy
1.8.0 before 2.1.4 · source: NVD
LE
Leap · Opensuse
15.1 · source: NVD
OC
Openshift Container Platform · Redhat
3.11; 4.0 · source: NVD
UL
Ubuntu Linux · Canonical
18.04; 19.10 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-11100
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-11100
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00002.html
Third Party Advisory
http://packetstormsecurity.com/files/157323/haproxy-hpack-tbl.c-Out-Of-Bounds-Write.html
Vendor Advisory
http://www.haproxy.org
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1819111
Issue Tracking
https://bugzilla.suse.com/show_bug.cgi?id=1168023
git.haproxy.org
https://git.haproxy.org/?p=haproxy.git%3Ba=commit%3Bh=5dfc5d5cd0d2128d77253ead3acf03a421ab5b88
More from Ubuntu Linux
9.8
CVE-2020-11651
SaltStack Salt Authentication Bypass Vulnerability
9.8
CVE-2020-7247
OpenSMTPD Remote Code Execution Vulnerability
9.8
CVE-2019-11043
Underflow in PHP-FPM can lead to RCE
9.8
CVE-2019-16928
Exim Out-of-bounds Write Vulnerability
9.8
CVE-2019-10149
Exim Mail Transfer Agent (MTA) Improper Input Validation