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Ubuntu.comUB:CVE-2022-43680HistoryOct 24, 2022 - 12:00 a.m.
CVE-2022-43680
2022-10-2400:00:00
ubuntu.com
ubuntu.com
49
libexpat
use-after free
xml_externalentityparsercreate
out-of-memory
shared dtd
CVSS3
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
0.004
Percentile
74.1%
In libexpat through 2.4.9, there is a use-after free caused by overeager
destruction of a shared DTD in XML_ExternalEntityParserCreate in
out-of-memory situations.
Bugs
Notes
| Author | Note |
|---|---|
| sbeattie | paraview uses system expat xotcl uses system expat poco uses system expat gdcm uses system expat audacity uses system expat simgear uses system expat coin3 uses system expat as of 4.0.0~CMake~6f54f1602475+ds1-1 sitecopy uses system expat since 1:0.16.0-1 (dapper!) |
| mdeslaur | apache2 uses system expat apr-util uses system expat cmake uses system expat ghostscript uses system expat |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 16.04 | noarch | ayttm | < any | UNKNOWN |
| ubuntu | 16.04 | noarch | cableswig | < any | UNKNOWN |
| ubuntu | 18.04 | noarch | cadaver | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | cadaver | < any | UNKNOWN |
| ubuntu | 22.04 | noarch | cadaver | < any | UNKNOWN |
| ubuntu | 24.04 | noarch | cadaver | < any | UNKNOWN |
| ubuntu | 16.04 | noarch | cadaver | < any | UNKNOWN |
| ubuntu | 18.04 | noarch | coin3 | < any | UNKNOWN |
| ubuntu | 14.04 | noarch | coin3 | < any | UNKNOWN |
| ubuntu | 16.04 | noarch | coin3 | < any | UNKNOWN |
References
github.com/libexpat/libexpat/issues/649
github.com/libexpat/libexpat/pull/616
github.com/libexpat/libexpat/pull/650
launchpad.net/bugs/cve/CVE-2022-43680
nvd.nist.gov/vuln/detail/CVE-2022-43680
security-tracker.debian.org/tracker/CVE-2022-43680
ubuntu.com/security/notices/USN-5638-2
ubuntu.com/security/notices/USN-5638-3
ubuntu.com/security/notices/USN-5638-4
www.cve.org/CVERecord?id=CVE-2022-43680
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CVSS3
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
0.004
Percentile
74.1%
Related for UB:CVE-2022-43680