CVE-2020-12783
exim4: Exim through 4.93 has an out-of-bounds read in the SPA authenticator that could result in SPA/NTLM authentication byp...
CVE-2020-12783 is fixed in 6 products on 1 platform, first by exim4 4.90.1-1ubuntu1.5, released May 11, 2020. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
n/a
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0455
91st percentile
Exim through 4.93 has an out-of-bounds read in the SPA authenticator that could result in SPA/NTLM authentication bypass in auths/spa.c and auths/auth-spa.c.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| exim4 · Ubuntu 18.04.6 LTS (bionic) | 4.90.1-1ubuntu1.5 | exim4 4.90.1-1ubuntu1.5 | May 11, 2020 |
| exim4 · Ubuntu 20.04 LTS (focal) | 4.93-13ubuntu1.1 | exim4 4.93-13ubuntu1.1 | May 11, 2020 |
| exim4-base · Ubuntu 18.04.6 LTS (bionic) | 4.90.1-1ubuntu1.5 | exim4-base 4.90.1-1ubuntu1.5 | May 11, 2020 |
| exim4-base · Ubuntu 20.04 LTS (focal) | 4.93-13ubuntu1.1 | exim4-base 4.93-13ubuntu1.1 | May 11, 2020 |
| exim4-config · Ubuntu 18.04.6 LTS (bionic) | 4.90.1-1ubuntu1.5 | exim4-config 4.90.1-1ubuntu1.5 | May 11, 2020 |
| exim4-config · Ubuntu 20.04 LTS (focal) | 4.93-13ubuntu1.1 | exim4-config 4.93-13ubuntu1.1 | May 11, 2020 |
| exim4-daemon-heavy · Ubuntu 18.04.6 LTS (bionic) | 4.90.1-1ubuntu1.5 | exim4-daemon-heavy 4.90.1-1ubuntu1.5 | May 11, 2020 |
| exim4-daemon-heavy · Ubuntu 20.04 LTS (focal) | 4.93-13ubuntu1.1 | exim4-daemon-heavy 4.93-13ubuntu1.1 | May 11, 2020 |
| exim4-daemon-light · Ubuntu 18.04.6 LTS (bionic) | 4.90.1-1ubuntu1.5 | exim4-daemon-light 4.90.1-1ubuntu1.5 | May 11, 2020 |
| exim4-daemon-light · Ubuntu 20.04 LTS (focal) | 4.93-13ubuntu1.1 | exim4-daemon-light 4.93-13ubuntu1.1 | May 11, 2020 |
| eximon4 · Ubuntu 18.04.6 LTS (bionic) | 4.90.1-1ubuntu1.5 | eximon4 4.90.1-1ubuntu1.5 | May 11, 2020 |
| eximon4 · Ubuntu 20.04 LTS (focal) | 4.93-13ubuntu1.1 | eximon4 4.93-13ubuntu1.1 | May 11, 2020 |
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