CVE-2012-2686
published 2013-02-08CVE-2012-2686: crypto/evp/e_aes_cbc_hmac_sha1.c in the AES-NI functionality in the TLS 1.1 and 1.2 implementations in OpenSSL 1.0.1 before 1.0.1d allows remote attackers to…
PriorityP334medium5CVSS 2.0
AVNACLAuNCNINAP
EXPLOIT
EPSS
39.59%
98.4th percentile
crypto/evp/e_aes_cbc_hmac_sha1.c in the AES-NI functionality in the TLS 1.1 and 1.2 implementations in OpenSSL 1.0.1 before 1.0.1d allows remote attackers to cause a denial of service (application crash) via crafted CBC data.
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | openssl | < openssl 1.0.1e-1 (bookworm) | openssl 1.0.1e-1 (bookworm) |
| openssl | openssl | — | — |
| openssl | openssl | — | — |
| openssl | openssl | — | — |
| openssl | openssl | — | — |
| openssl | openssl | >= 0 < 1.0.1e-1 | 1.0.1e-1 |
| openssl | openssl | >= 0 < 1.0.1e-1 | 1.0.1e-1 |
| openssl | openssl | >= 0 < 1.0.1e-1 | 1.0.1e-1 |
| openssl | openssl | >= 0 < 1.0.1e-1 | 1.0.1e-1 |
Detection & IOCsextracted from sources · hover to see the quote
- →Target is only vulnerable on 64-bit OpenSSL 1.0.1 builds (before 1.0.1d); 32-bit builds do not include the vulnerable AES-NI code path. ↗
- →The exploit triggers an integer underflow via crafted CBC data in TLS 1.1 or TLS 1.2 handshakes; monitor for unexpected application crashes in OpenSSL-linked services receiving TLS 1.1/1.2 CBC traffic. ↗
- →A Metasploit auxiliary module (auxiliary/dos/ssl/openssl_aesni) exists for this CVE; presence of this module in use against TLS services is a strong indicator of exploitation attempts. ↗
- ·Red Hat Enterprise Linux 5 and 6 are NOT affected because their shipped OpenSSL versions did not include TLS 1.1 or 1.2 support. ↗
- ·Only Ubuntu 12.04 LTS and Ubuntu 12.10 (64-bit) with OpenSSL 1.0.1c are confirmed affected; the vulnerability is scoped to AES-NI hardware-accelerated platforms. ↗
- ·The initial patch (USN-1732-1) was temporarily reverted (USN-1732-2) due to a regression causing AES-NI decryption failures; the final fix was re-applied in USN-1732-3 with an additional upstream regression fix. ↗
CVSS provenance
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
osv5.0MEDIUM
vendor_debian5.0MEDIUM
vendor_redhat5.0MEDIUM
vendor_ubuntu5.0MEDIUM
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GHSA
GHSA-5r46-h84j-rjp5: crypto/evp/e_aes_cbc_hmac_sha1
ghsa_unreviewed·2022-05-14
CVE-2012-2686 [MEDIUM] GHSA-5r46-h84j-rjp5: crypto/evp/e_aes_cbc_hmac_sha1
crypto/evp/e_aes_cbc_hmac_sha1.c in the AES-NI functionality in the TLS 1.1 and 1.2 implementations in OpenSSL 1.0.1 before 1.0.1d allows remote attackers to cause a denial of service (application crash) via crafted CBC data.
OSV
CVE-2012-2686: crypto/evp/e_aes_cbc_hmac_sha1
osv·2013-02-08·CVSS 5.0
CVE-2012-2686 [MEDIUM] CVE-2012-2686: crypto/evp/e_aes_cbc_hmac_sha1
crypto/evp/e_aes_cbc_hmac_sha1.c in the AES-NI functionality in the TLS 1.1 and 1.2 implementations in OpenSSL 1.0.1 before 1.0.1d allows remote attackers to cause a denial of service (application crash) via crafted CBC data.
Ubuntu
OpenSSL vulnerability
vendor_ubuntu·2013-03-25·CVSS 5.0
CVE-2013-0169 [MEDIUM] OpenSSL vulnerability
Title: OpenSSL vulnerability
Summary: Several security issues were fixed in OpenSSL.
USN-1732-1 fixed vulnerabilities in OpenSSL. The fix for CVE-2013-0169 and
CVE-2012-2686 was reverted in USN-1732-2 because of a regression. This
update restores the security fix, and includes an extra fix from upstream
to address the AES-NI regression. We apologize for the inconvenience.
Original advisory details:
Adam Langley and Wolfgang Ettlingers discovered that OpenSSL incorrectly
handled certain crafted CBC data when used with AES-NI. A remote attacker
could use this issue to cause OpenSSL to crash, resulting in a denial of
service. This issue only affected Ubuntu 12.04 LTS and Ubuntu 12.10.
(CVE-2012-2686)
Nadhem Alfardan and Kenny Paterson discovered that the TLS protocol as used
in OpenSSL w
Ubuntu
OpenSSL regression
vendor_ubuntu·2013-02-28·CVSS 5.0
CVE-2013-0169 [MEDIUM] OpenSSL regression
Title: OpenSSL regression
Summary: USN-1732-1 introduced a regression in OpenSSL.
USN-1732-1 fixed vulnerabilities in OpenSSL. The fix for CVE-2013-0169 and
CVE-2012-2686 introduced a regression causing decryption failures on
hardware supporting AES-NI. This update temporarily reverts the security
fix pending further investigation. We apologize for the inconvenience.
Original advisory details:
Adam Langley and Wolfgang Ettlingers discovered that OpenSSL incorrectly
handled certain crafted CBC data when used with AES-NI. A remote attacker
could use this issue to cause OpenSSL to crash, resulting in a denial of
service. This issue only affected Ubuntu 12.04 LTS and Ubuntu 12.10.
(CVE-2012-2686)
Nadhem Alfardan and Kenny Paterson discovered that the TLS protocol as used
in OpenSSL was vu
Ubuntu
OpenSSL vulnerabilities
vendor_ubuntu·2013-02-21·CVSS 5.0
CVE-2012-2686 [MEDIUM] OpenSSL vulnerabilities
Title: OpenSSL vulnerabilities
Summary: Several security issues were fixed in OpenSSL.
Adam Langley and Wolfgang Ettlingers discovered that OpenSSL incorrectly
handled certain crafted CBC data when used with AES-NI. A remote attacker
could use this issue to cause OpenSSL to crash, resulting in a denial of
service. This issue only affected Ubuntu 12.04 LTS and Ubuntu 12.10.
(CVE-2012-2686)
Stephen Henson discovered that OpenSSL incorrectly performed signature
verification for OCSP responses. A remote attacker could use this issue to
cause OpenSSL to crash, resulting in a denial of service. (CVE-2013-0166)
Nadhem Alfardan and Kenny Paterson discovered that the TLS protocol as used
in OpenSSL was vulnerable to a timing side-channel attack known as the
"Lucky Thirteen" issue. A remote atta
Red Hat
openssl: DoS due to improper handling of CBC ciphersuites in TLS 1.1/1.2 on AES-NI supporting platforms
vendor_redhat·2013-02-05·CVSS 5.0
CVE-2012-2686 [MEDIUM] openssl: DoS due to improper handling of CBC ciphersuites in TLS 1.1/1.2 on AES-NI supporting platforms
openssl: DoS due to improper handling of CBC ciphersuites in TLS 1.1/1.2 on AES-NI supporting platforms
crypto/evp/e_aes_cbc_hmac_sha1.c in the AES-NI functionality in the TLS 1.1 and 1.2 implementations in OpenSSL 1.0.1 before 1.0.1d allows remote attackers to cause a denial of service (application crash) via crafted CBC data.
Statement: Not vulnerable. This issue did not affect the versions of OpenSSL as shipped with Red Hat Enterprise Linux 5 and 6 as they did not include support for TLS 1.2 or 1.1.
Package: openssl (Red Hat Enterprise Linux 5) - Not affected
Package: openssl097a (Red Hat Enterprise Linux 5) - Not affected
Package: openssl (Red Hat Enterprise Linux 6) - Not affected
Package: openssl098e (Red Hat Enterprise Linux 6) - Not affected
Debian
CVE-2012-2686: openssl - crypto/evp/e_aes_cbc_hmac_sha1.c in the AES-NI functionality in the TLS 1.1 and ...
vendor_debian·2012·CVSS 5.0
CVE-2012-2686 [MEDIUM] CVE-2012-2686: openssl - crypto/evp/e_aes_cbc_hmac_sha1.c in the AES-NI functionality in the TLS 1.1 and ...
crypto/evp/e_aes_cbc_hmac_sha1.c in the AES-NI functionality in the TLS 1.1 and 1.2 implementations in OpenSSL 1.0.1 before 1.0.1d allows remote attackers to cause a denial of service (application crash) via crafted CBC data.
Scope: local
bookworm: resolved (fixed in 1.0.1e-1)
bullseye: resolved (fixed in 1.0.1e-1)
forky: resolved (fixed in 1.0.1e-1)
sid: resolved (fixed in 1.0.1e-1)
trixie: resolved (fixed in 1.0.1e-1)
No detection rules found.
Bugzilla
CVE-2012-2686 openssl: DoS due to improper handling of CBC ciphersuites in TLS 1.1/1.2 on AES-NI supporting platforms
bugzilla·2013-02-05·CVSS 5.0
CVE-2012-2686 [MEDIUM] CVE-2012-2686 openssl: DoS due to improper handling of CBC ciphersuites in TLS 1.1/1.2 on AES-NI supporting platforms
CVE-2012-2686 openssl: DoS due to improper handling of CBC ciphersuites in TLS 1.1/1.2 on AES-NI supporting platforms
A flaw in the OpenSSL handling of CBC ciphersuites in TLS 1.1 and TLS 1.2 on AES-NI (Advanced Encryption Standard New Instructions) supporting platforms [1] can be exploited in a DoS attack.
Anyone using an AES-NI platform for TLS 1.2 or TLS 1.1 on OpenSSL 1.0.1c is affected. Platforms which do not support AES-NI or versions of OpenSSL which do not implement TLS 1.2 or 1.1 (for example OpenSSL 0.9.8 and 1.0.0) are not affected.
[1] http://en.wikipedia.org/wiki/AES-NI#Supporting_CPUs
External References:
http://www.openssl.org/news/secadv_20130205.txt
Discussion:
Statement:
Not vulnerable. This issue did not affect the versions of OpenSSL as shipped with Red Hat Ent
Bugzilla
CVE-2012-2686 openssl: DoS due to improper handling of CBC ciphersuites in TLS 1.1/1.2 on AES-NI supporting platforms [fedora-18]
bugzilla·2013-02-05·CVSS 5.0
CVE-2012-2686 [MEDIUM] CVE-2012-2686 openssl: DoS due to improper handling of CBC ciphersuites in TLS 1.1/1.2 on AES-NI supporting platforms [fedora-18]
CVE-2012-2686 openssl: DoS due to improper handling of CBC ciphersuites in TLS 1.1/1.2 on AES-NI supporting platforms [fedora-18]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of Fedora.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When creating a Bodhi update request, please use the bodhi submission link
noted in the next comment(s). This will include the bug IDs of this
tracking bug as well as the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
Bodhi note
http://git.openssl.org/gitweb/?p=openssl.git%3Ba=commit%3Bh=125093b59f3c2a2d33785b5563d929d0472f1721http://lists.apple.com/archives/security-announce/2013/Sep/msg00002.htmlhttp://marc.info/?l=bugtraq&m=137545771702053&w=2http://secunia.com/advisories/55108http://secunia.com/advisories/55139http://support.apple.com/kb/HT5880http://www.openssl.org/news/secadv_20130204.txthttp://www.securityfocus.com/bid/57755https://bugzilla.redhat.com/show_bug.cgi?id=908029https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18868https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19660https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-c03883001http://git.openssl.org/gitweb/?p=openssl.git%3Ba=commit%3Bh=125093b59f3c2a2d33785b5563d929d0472f1721http://lists.apple.com/archives/security-announce/2013/Sep/msg00002.htmlhttp://marc.info/?l=bugtraq&m=137545771702053&w=2http://secunia.com/advisories/55108http://secunia.com/advisories/55139http://support.apple.com/kb/HT5880http://www.openssl.org/news/secadv_20130204.txthttp://www.securityfocus.com/bid/57755https://bugzilla.redhat.com/show_bug.cgi?id=908029https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18868https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19660https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-c03883001
2013-02-08
Published