CVE-2017-9049: Use After Free
libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a heap-based buffer over-read in the xmlDictComputeFastKey function in dict.c. This vulnerability causes programs that use libxml2, such as PHP, to crash. This vulnerability exists because of an incomplete fix for libxml2 Bug 759398.
Other sources
libxml2. A use after free issue was addressed with improved memory management.
Credit
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/libxml2to a version that resolves this vulnerability.Fixed in 2.9.4+dfsg1-7+deb10u4Fixed in 2.9.4+dfsg1-7+deb10u6Fixed in 2.9.10+dfsg-6.7+deb11u4Fixed in 2.9.14+dfsg-1.3~deb12u1Fixed in 2.9.14+dfsg-1.3 - Upgrade
Upgrade
debian/libxml2to a version that resolves this vulnerability.Fixed in 2.9.4+dfsg1-3.1Fixed in 2.9.4+dfsg1-2.2+deb9u1Fixed in 2.9.1+dfsg1-5+deb8u5 - Upgrade
Upgrade
tvOSto a version that resolves this vulnerability.Fixed in 11 - Upgrade
Upgrade
macOS High Sierrato a version that resolves this vulnerability.Fixed in 10.13 - Upgrade
Upgrade
macOS High Sierrato a version that resolves this vulnerability.Fixed in 10.13.1 - Upgrade
Upgrade
Apple iOS, iPadOS, and watchOSto a version that resolves this vulnerability.Fixed in 4 - Upgrade
Upgrade
Apple iCloudto a version that resolves this vulnerability.Fixed in 7.0 - Upgrade
Upgrade
iTunesto a version that resolves this vulnerability.Fixed in 12.7 - Upgrade
Upgrade
Apple iOS and iPadOSto a version that resolves this vulnerability.Fixed in 11
Event History
Parent advisories
This vulnerability appears in the following advisories.
Peer vulnerabilities
Found alongside the following vulnerabilities.
- CVE-2017-13832
- CVE-2017-13829
- CVE-2017-13833
- CVE-2017-7083
- CVE-2017-0381
- CVE-2017-13825
- CVE-2017-13815
- CVE-2017-13828
- CVE-2017-13830
- CVE-2017-13814
- CVE-2017-13831
- 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-2017-7114
- CVE-2017-13854
- CVE-2017-13834
- CVE-2017-13873
- CVE-2017-13813
- CVE-2017-13816
- CVE-2017-13812
- CVE-2017-7086
- CVE-2017-1000373
- CVE-2016-9063
- CVE-2017-9233
- CVE-2017-9049
- CVE-2017-5130
- CVE-2017-7376
- CVE-2017-9050
- CVE-2017-13822
- CVE-2017-7080
- CVE-2017-10989
- CVE-2017-7128
- CVE-2017-7129
- CVE-2017-7130
- CVE-2017-7127
- CVE-2017-7081
- CVE-2017-7087
- CVE-2017-7091
- CVE-2017-7092
- CVE-2017-7093
- CVE-2017-7094
- CVE-2017-7095
- CVE-2017-7096
- CVE-2017-7098
- CVE-2017-7099
- CVE-2017-7100
- CVE-2017-7102
- CVE-2017-7104
- CVE-2017-7107
- CVE-2017-7111
- CVE-2017-7117
- CVE-2017-7120
- CVE-2017-7090
- CVE-2017-7109
- CVE-2017-11120
- CVE-2017-11121
- CVE-2017-7103
- CVE-2017-7105
- CVE-2017-7108
- CVE-2017-7110
- CVE-2017-7112
- CVE-2017-7115
- CVE-2017-7116
- CVE-2017-11122
- CVE-2016-9840
- CVE-2016-9841
- CVE-2016-9842
- CVE-2016-9843
- CVE-2016-0736
- CVE-2016-2161
- CVE-2016-5387
- CVE-2016-8740
- CVE-2016-8743
- CVE-2017-13909
- CVE-2017-13809
- CVE-2017-7084
- CVE-2017-7074
- CVE-2017-13820
- CVE-2017-13807
- CVE-2017-7143
- CVE-2017-13821
- CVE-2017-13890
- CVE-2017-13851
- CVE-2017-7138
- CVE-2017-7121
- CVE-2017-7122
- CVE-2017-7123
- CVE-2017-7124
- CVE-2017-7125
- CVE-2017-7126
- CVE-2017-13811
- CVE-2017-13835
- CVE-2017-11103
- CVE-2017-13819
- CVE-2017-13837
- CVE-2017-13906
- CVE-2017-7077
- CVE-2017-7119
- CVE-2017-13810
- CVE-2017-13827
- CVE-2016-4736
- CVE-2018-4302
- CVE-2017-7141
- CVE-2017-7078
- CVE-2017-6451
- CVE-2017-6452
- CVE-2017-6455
- CVE-2017-6458
- CVE-2017-6459
- CVE-2017-6460
- CVE-2017-6462
- CVE-2017-6463
- CVE-2017-6464
- CVE-2016-9042
- CVE-2017-13824
- CVE-2017-13846
- CVE-2017-10140
- CVE-2017-7132
- CVE-2017-13823
- CVE-2017-13808
- CVE-2017-13838
- CVE-2017-7082
- CVE-2017-13908
- CVE-2017-13839
- CVE-2017-13910
- 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-2017-1000100
- CVE-2017-1000101
- CVE-2017-13801
- CVE-2017-13799
- CVE-2017-13852
- CVE-2017-5969
- CVE-2018-4390
- CVE-2018-4391
- CVE-2017-13907
- CVE-2017-7170
- CVE-2017-7150
- 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
- CVE-2017-7089
- CVE-2017-7106
- CVE-2017-13863
- CVE-2017-7131
- CVE-2017-7088
- CVE-2017-7072
- CVE-2017-7140
- CVE-2017-7148
- CVE-2017-7097
- CVE-2017-7118
- CVE-2017-7133
- CVE-2017-7075
- CVE-2017-7139
- CVE-2017-13806
- CVE-2017-7085
- CVE-2017-13877
- CVE-2017-7146
- CVE-2017-6211
- CVE-2017-7145
- CVE-2017-7144
- CVE-2017-7142
Frequently Asked Questions
What is CVE-2017-9049?
CVE-2017-9049 is a vulnerability in the libxml2 library that could cause programs to crash.
Which software versions are affected by CVE-2017-9049?
CVE-2017-9049 affects various versions of Apple tvOS, iOS, libxml2 on Debian, macOS High Sierra, iTunes for Windows, watchOS, iCloud for Windows, and other versions of libxml2 on Debian.
What is the severity of CVE-2017-9049?
CVE-2017-9049 has a severity score of 7.5, which is considered high.
How can I fix CVE-2017-9049?
To fix CVE-2017-9049, you should update to the latest version of the affected software or apply the recommended patches.
Where can I find more information about CVE-2017-9049?
You can find more information about CVE-2017-9049 on the Apple support website and the Bugzilla page.