CVE-2016-0702
Description
The MOD_EXP_CTIME_COPY_FROM_PREBUF function in crypto/bn/bn_exp.c in OpenSSL 1.0.1 before 1.0.1s and 1.0.2 before 1.0.2g does not properly consider cache-bank access times during modular exponentiation, which makes it easier for local users to discover RSA keys by running a crafted application on the same Intel Sandy Bridge CPU core as a victim and leveraging cache-bank conflicts, aka a "CacheBleed" attack.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Ubuntu Affected 3 releases
| Version | Status | Fixed in |
|---|---|---|
| 15.10 | Affected | — |
| 14.04 | Affected | — |
| 12.04 | Affected | — |
Debian Mixed 7 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 1.0.2g-1 |
| sid | Fixed | 1.0.2g-1 |
| forky | Fixed | 1.0.2g-1 |
| bullseye | Fixed | 1.0.2g-1 |
| bookworm | Fixed | 1.0.2g-1 |
| 8.0 | Affected | — |
| 7.0 | Affected | — |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| openssl | openssl | 1.0.1 | |
| openssl | openssl | 1.0.1a | |
| openssl | openssl | 1.0.1b | |
| openssl | openssl | 1.0.1c | |
| openssl | openssl | 1.0.1d | |
| openssl | openssl | 1.0.1e | |
| openssl | openssl | 1.0.1f | |
| openssl | openssl | 1.0.1g | |
| openssl | openssl | 1.0.1h | |
| openssl | openssl | 1.0.1i | |
| openssl | openssl | 1.0.1j | |
| openssl | openssl | 1.0.1k | |
| openssl | openssl | 1.0.1l | |
| openssl | openssl | 1.0.1m | |
| openssl | openssl | 1.0.1n | |
| openssl | openssl | 1.0.1o | |
| openssl | openssl | 1.0.1p | |
| openssl | openssl | 1.0.1q | |
| openssl | openssl | 1.0.1r | |
| openssl | openssl | 1.0.2 | |
| openssl | openssl | 1.0.2a | |
| openssl | openssl | 1.0.2b | |
| openssl | openssl | 1.0.2c | |
| openssl | openssl | 1.0.2d | |
| openssl | openssl | 1.0.2e | |
| openssl | openssl | 1.0.2f | |
| nodejs | node.js | {"startIncluding":"4.0.0","endIncluding":"4.1.2"} | |
References
- http://cachebleed.info
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759
- http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178358.html
- http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178817.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00001.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00002.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00003.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00005.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00006.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00007.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00009.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00010.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00012.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00025.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00038.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00015.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00017.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00018.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00029.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00030.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00036.html
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00055.html
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00019.html
- http://marc.info/?l=bugtraq&m=145889460330120&w=2
CWEs
CWE-200
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.