CVE-2021-23840
Published: 16 February 2021
Calls to EVP_CipherUpdate, EVP_EncryptUpdate and EVP_DecryptUpdate may overflow the output length argument in some cases where the input length is close to the maximum permissable length for an integer on the platform. In such cases the return value from the function call will be 1 (indicating success), but the output length value will be negative. This could cause applications to behave incorrectly or crash. OpenSSL versions 1.1.1i and below are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1j. OpenSSL versions 1.0.2x and below are affected by this issue. However OpenSSL 1.0.2 is out of support and no longer receiving public updates. Premium support customers of OpenSSL 1.0.2 should upgrade to 1.0.2y. Other users should upgrade to 1.1.1j. Fixed in OpenSSL 1.1.1j (Affected 1.1.1-1.1.1i). Fixed in OpenSSL 1.0.2y (Affected 1.0.2-1.0.2x).
Notes
| Author | Note |
|---|---|
| mdeslaur | edk2 doesn't use EVP_CipherUpdate, EVP_EncryptUpdate, or EVP_DecryptUpdate, so it doesn't appear vulnerable to this issue edk2 upstream says EVP_DecryptUpdate is used by drivers |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
edk2 Launchpad, Ubuntu, Debian |
bionic |
Needed
|
| focal |
Released
(0~20191122.bd85bf54-2ubuntu3.3)
|
|
| groovy |
Ignored
(reached end-of-life)
|
|
| hirsute |
Released
(2020.11-4ubuntu0.1)
|
|
| impish |
Not vulnerable
(2021.08~rc0-2)
|
|
| jammy |
Not vulnerable
(2021.08~rc0-2)
|
|
| kinetic |
Not vulnerable
(2021.08~rc0-2)
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Not vulnerable
|
|
| xenial |
Needs triage
|
|
|
nodejs Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(uses system openssl1.0)
|
| focal |
Not vulnerable
(uses system openssl1.1)
|
|
| groovy |
Not vulnerable
(uses system openssl1.1)
|
|
| hirsute |
Not vulnerable
(uses system openssl1.1)
|
|
| impish |
Not vulnerable
(uses system openssl1.1)
|
|
| jammy |
Needed
|
|
| kinetic |
Not vulnerable
(uses system openssl1.1)
|
|
| precise |
Does not exist
|
|
| trusty |
Not vulnerable
(uses system openssl)
|
|
| upstream |
Needs triage
|
|
| xenial |
Not vulnerable
(uses system openssl)
|
|
|
openssl Launchpad, Ubuntu, Debian |
bionic |
Released
(1.1.1-1ubuntu2.1~18.04.8)
|
| focal |
Released
(1.1.1f-1ubuntu2.2)
|
|
| groovy |
Released
(1.1.1f-1ubuntu4.2)
|
|
| hirsute |
Released
(1.1.1j-1ubuntu1)
|
|
| impish |
Released
(1.1.1j-1ubuntu1)
|
|
| jammy |
Released
(1.1.1j-1ubuntu1)
|
|
| kinetic |
Released
(1.1.1j-1ubuntu1)
|
|
| precise |
Ignored
(end of ESM support, was needs-triage)
|
|
| trusty |
Needs triage
|
|
| upstream |
Released
(1.1.1j)
|
|
| xenial |
Released
(1.0.2g-1ubuntu4.19)
|
|
|
Patches: upstream: https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=6a51b9e1d0cf0bf8515f7201b68fb0a3482b3dc1 |
||
|
openssl1.0 Launchpad, Ubuntu, Debian |
bionic |
Released
(1.0.2n-1ubuntu5.6)
|
| focal |
Does not exist
|
|
| groovy |
Does not exist
|
|
| hirsute |
Does not exist
|
|
| impish |
Does not exist
|
|
| jammy |
Does not exist
|
|
| kinetic |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(1.0.2y)
|
|
| xenial |
Does not exist
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |