CVE-2017-7805
During TLS 1.2 exchanges, handshake hashes are generated which point to a message buffer. This saved data is used for later messages but in some cases, the handshake transcript can exceed the space
02 Description
During TLS 1.2 exchanges, handshake hashes are generated which point to a message buffer. This saved data is used for later messages but in some cases, the handshake transcript can exceed the space
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 3.05% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 87.3% of scored records. A rank, not a probability.
- NVD base score
- 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Important. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2018-06-11 21:00Z8 YR AGO
- Last updated
- 2024-08-05 16:12Z2 YR AGO
- Reserved
- 2017-04-12
- Assigning CNA
- mozilla
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-416Use After FreeVariant
- Data version
- 5.1
- Document digest
- b1242f6935b679791d1cb20f73d7d4d6046801f308405820921e1c0840476c2a
05 Affected products
06 References
- access.redhat.comRHSA-2017:2832https://access.redhat.com/errata/RHSA-2017:2832
- www.securityfocus.com101059http://www.securityfocus.com/bid/101059
- lists.debian.org[debian-lts-announce] 20171101 [SECURITY] [DLA 1153-1] icedove/thunderbird security updatehttps://lists.debian.org/debian-lts-announce/2017/11/msg00000.html
- www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2017-22/
- bugzilla.mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=1377618
- www.securitytracker.com1039465http://www.securitytracker.com/id/1039465
- www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2017-21/
- www.debian.orgDSA-4014https://www.debian.org/security/2017/dsa-4014
- www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
- www.mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2017-23/
- www.debian.orgDSA-3998https://www.debian.org/security/2017/dsa-3998
- www.debian.orgDSA-3987https://www.debian.org/security/2017/dsa-3987
- security.gentoo.orgGLSA-201803-14https://security.gentoo.org/glsa/201803-14
07 Fixed in
Arch Linux
- thunderbird Fixed in 52.4.0-1
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
Debian 12
- firefox-esr Fixed in 52.4.0esr-2
- nss Fixed in 2:3.33-1
- thunderbird Fixed in 1:52.4.0-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- firefox-esr Fixed in 52.4.0esr-2
- nss Fixed in 2:3.33-1
- thunderbird Fixed in 1:52.4.0-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- firefox-esr Fixed in 52.4.0esr-2
- nss Fixed in 2:3.33-1
- thunderbird Fixed in 1:52.4.0-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- firefox Fixed in 56.0+build6-0ubuntu0.14.04.1
- nss Fixed in 2:3.28.4-0ubuntu0.14.04.3
- thunderbird Fixed in 1:52.4.0+build1-0ubuntu0.14.04.2
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- firefox Fixed in 56.0+build6-0ubuntu0.16.04.1
- nss Fixed in 2:3.28.4-0ubuntu0.16.04.3
- thunderbird Fixed in 1:52.4.0+build1-0ubuntu0.16.04.2
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- firefox Fixed in 56.0+build6-0ubuntu1
- nss Fixed in 2:3.32-1ubuntu3
- thunderbird Fixed in 1:52.4.0+build1-0ubuntu2
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.