CVE-2022-37434
Published: 5 August 2022
zlib through 1.2.12 has a heap-based buffer over-read or buffer overflow in inflate in inflate.c via a large gzip header extra field. NOTE: only applications that call inflateGetHeader are affected. Some common applications bundle the affected zlib source code but may be unable to call inflateGetHeader (e.g., see the nodejs/node reference).
Notes
| Author | Note |
|---|---|
| mdeslaur | Since 3.1.3-7, rsync builds with the system zlib. Apps are only vulnerable if they use inflateGetHeader() and call inflate() in a loop. This fix caused a regression, see: https://www.openwall.com/lists/oss-security/2022/08/09/1 https://github.com/curl/curl/issues/9271 The second commit below fixes the regression. |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
rsync Launchpad, Ubuntu, Debian |
bionic |
Released
(3.1.2-2.1ubuntu1.5)
|
| focal |
Released
(3.1.3-8ubuntu0.4)
|
|
| jammy |
Not vulnerable
(uses system zlib)
|
|
| kinetic |
Not vulnerable
(uses system zlib)
|
|
| trusty |
Not vulnerable
(uses system zlib)
|
|
| upstream |
Needs triage
|
|
| xenial |
Released
(3.1.1-3ubuntu1.3+esm2)
|
|
|
Patches: upstream: https://github.com/WayneD/rsync/commit/788f11ea6afeb96f0d84f140192165a1ca12ade4 upstream: https://github.com/WayneD/rsync/commit/9e2921fce8c518e370c324407d35bc83ba12f2d5 |
||
|
zlib Launchpad, Ubuntu, Debian |
bionic |
Released
(1:1.2.11.dfsg-0ubuntu2.2)
|
| focal |
Released
(1:1.2.11.dfsg-2ubuntu1.5)
|
|
| jammy |
Released
(1:1.2.11.dfsg-2ubuntu9.2)
|
|
| kinetic |
Not vulnerable
(1:1.2.11.dfsg-4.1ubuntu1)
|
|
| trusty |
Released
(1:1.2.8.dfsg-1ubuntu1.1+esm2)
|
|
| upstream |
Released
(1.2.13, 1:1.2.11.dfsg-4.1)
|
|
| xenial |
Released
(1:1.2.8.dfsg-2ubuntu4.3+esm2)
|
|
|
Patches: upstream: https://github.com/madler/zlib/commit/eff308af425b67093bab25f80f1ae950166bece1 upstream: https://github.com/madler/zlib/commit/1eb7682f845ac9e9bf9ae35bbfb3bad5dacbd91d |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 9.8 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |