CVE-2017-9789: Use After Free
Published Jul 13, 2017
·Updated
apache. Multiple issues were addressed by updating to version 2.4.27.
Other sources
When under stress, closing many connections, the HTTP/2 handling code in Apache httpd 2.4.26 would sometimes access memory after it has been freed, resulting in potentially erratic behaviour.
Credit
CVE-2016-0736, CVE-2016-2161, CVE-2016-5387, CVE-2016-8740, CVE-2016-8743, CVE-2017-3167, CVE-2017-3169, CVE-2017-7659, CVE-2017-7668, CVE-2017-7679, CVE-2017-9788, CVE-2017-9789
Affected Software
4 affected componentsFixes available
Apache HTTP Server=2.4.26
Apple macOS High Sierra<10.13.1
10.13.1
Apple Sierra
Apple El Capitan
Event History
Jul 13, 2017
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
DescriptionWeakness
Peer vulnerabilities
Found alongside the following vulnerabilities.
- CVE-2016-0736
- CVE-2016-2161
- CVE-2016-5387
- CVE-2016-8740
- CVE-2016-8743
- CVE-2017-3167
- CVE-2017-3169
- CVE-2017-7659
- CVE-2017-7668
- CVE-2017-7679
- CVE-2017-9788
- CVE-2017-9789
- CVE-2017-13786
- CVE-2017-13800
- CVE-2017-13809
- CVE-2017-13820
- CVE-2017-13807
- CVE-2017-13829
- CVE-2017-13833
- CVE-2017-13821
- CVE-2017-13825
- CVE-2017-1000100
- CVE-2017-1000101
- CVE-2017-13801
- CVE-2017-13815
- CVE-2017-13828
- CVE-2017-13811
- CVE-2017-13830
- CVE-2017-11103
- CVE-2017-13819
- CVE-2017-13814
- CVE-2017-13831
- CVE-2017-13906
- CVE-2017-13810
- CVE-2017-13817
- CVE-2017-13818
- CVE-2017-13836
- CVE-2017-13841
- CVE-2017-13840
- CVE-2017-13842
- CVE-2017-13782
- CVE-2017-13843
- CVE-2017-13834
- CVE-2017-13799
- CVE-2017-13852
- CVE-2017-13813
- CVE-2017-13812
- CVE-2016-4736
- CVE-2017-5969
- CVE-2017-5130
- CVE-2017-7376
- CVE-2017-9050
- CVE-2017-9049
- CVE-2018-4390
- CVE-2018-4391
- CVE-2017-13907
- CVE-2017-13824
- CVE-2017-13846
- CVE-2017-10140
- CVE-2017-13822
- CVE-2017-7132
- CVE-2017-13823
- CVE-2017-13808
- CVE-2017-13838
- CVE-2017-7170
- CVE-2017-7150
- CVE-2017-13908
- CVE-2017-13804
- CVE-2017-11108
- CVE-2017-11541
- CVE-2017-11542
- CVE-2017-11543
- CVE-2017-12893
- CVE-2017-12894
- CVE-2017-12895
- CVE-2017-12896
- CVE-2017-12897
- CVE-2017-12898
- CVE-2017-12899
- CVE-2017-12900
- CVE-2017-12901
- CVE-2017-12902
- CVE-2017-12985
- CVE-2017-12986
- CVE-2017-12987
- CVE-2017-12988
- CVE-2017-12989
- CVE-2017-12990
- CVE-2017-12991
- CVE-2017-12992
- CVE-2017-12993
- CVE-2017-12994
- CVE-2017-12995
- CVE-2017-12996
- CVE-2017-12997
- CVE-2017-12998
- CVE-2017-12999
- CVE-2017-13000
- CVE-2017-13001
- CVE-2017-13002
- CVE-2017-13003
- CVE-2017-13004
- CVE-2017-13005
- CVE-2017-13006
- CVE-2017-13007
- CVE-2017-13008
- CVE-2017-13009
- CVE-2017-13010
- CVE-2017-13011
- CVE-2017-13012
- CVE-2017-13013
- CVE-2017-13014
- CVE-2017-13015
- CVE-2017-13016
- CVE-2017-13017
- CVE-2017-13018
- CVE-2017-13019
- CVE-2017-13020
- CVE-2017-13021
- CVE-2017-13022
- CVE-2017-13023
- CVE-2017-13024
- CVE-2017-13025
- CVE-2017-13026
- CVE-2017-13027
- CVE-2017-13028
- CVE-2017-13029
- CVE-2017-13030
- CVE-2017-13031
- CVE-2017-13032
- CVE-2017-13033
- CVE-2017-13034
- CVE-2017-13035
- CVE-2017-13036
- CVE-2017-13037
- CVE-2017-13038
- CVE-2017-13039
- CVE-2017-13040
- CVE-2017-13041
- CVE-2017-13042
- CVE-2017-13043
- CVE-2017-13044
- CVE-2017-13045
- CVE-2017-13046
- CVE-2017-13047
- CVE-2017-13048
- CVE-2017-13049
- CVE-2017-13050
- CVE-2017-13051
- CVE-2017-13052
- CVE-2017-13053
- CVE-2017-13054
- CVE-2017-13055
- CVE-2017-13687
- CVE-2017-13688
- CVE-2017-13689
- CVE-2017-13690
- CVE-2017-13725
- CVE-2017-13077
- CVE-2017-13078
- CVE-2017-13080
Frequently Asked Questions
1
What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2017-9789.
2
What is the severity level of CVE-2017-9789?
The severity level of CVE-2017-9789 is high (7.5).
3
What is the affected software?
The affected software includes Apple macOS High Sierra 10.13.1, Apple Sierra, Apple El Capitan, and Apache HTTP server 2.4.26.
4
What is the description of CVE-2017-9789?
CVE-2017-9789 is a vulnerability in Apache httpd 2.4.26 that could result in potentially erratic behavior when closing many connections under stress.
5
How can I fix CVE-2017-9789?
To fix CVE-2017-9789, update to version 2.4.27 of Apache httpd.